Interactions

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Drug 1 dose (field_drug_1_dose)
ID Title drug 1 Sort descending drug 1 dose drug 1 effect drug 2 drug 2 dose drug 2 effect Clinical Effects Color Clinical Bottom Line Management Alt Agents Info Source Edit
6263 Rilpivirine Atorvastatin 648 Rilpivirine 150 mg daily

No significant change

Atorvastatin 40 mg daily

Atorvastatin Cmin decreased 15%; Cmax increased 35%

Green: Administer standard doses Administer standard doses
6279 Rilpivirine RIF 664 Rilpivirine 150 mg daily

Rilpivirine AUC decreased 80%; Cmin decreased 89%; Cmax decreased 69%

Rifampin 600 mg daily

No significant change

Decreased rilpivirine effects

Red: Avoid combination Do not coadminister: Reduced levels of rilpivirine

Use alternative agents

6959 Rilpivirine Esomeprazole 123 Rilpivirine Esomeprazole

Decreased rilpivirine effects

Red: Avoid combination Do not coadminister: Reduced levels of rilpivirine

Contraindicated. Use alternative agents.

H2-antagonists if administered at least 12 hours before rilpivirine or at least 4 hours after rilpivirine. DHHS Adult ARV Guidelines
6264 Rilpivirine DTG 649 Rilpivirine 25 mg daily

Rilpivirine Cmin increased 21%

Dolutegravir 50 mg daily

Dolutegravir Cmin increased 22%

Green: Administer standard doses Administer standard doses
6280 Rilpivirine RFB 665 Rilpivirine 150 mg daily

Rilpivirine AUC decreased 46%; Cmin decreased 49%; Cmax decreased 35%

Rifabutin 300 mg daily

Decreased rilpivirine effects

Red: Avoid combination Do not coadminister: Reduced levels of rilpivirine

Use alternative agents

6265 Rilpivirine Ethinyl estradiol / Norethindrone acetate 650 Rilpivirine 25 mg daily

No significant change

Ethinyl estradiol / Norethindrone acetate 0.035 mg daily ethinyl estradiol with 1 mg norethindrone daily

Ethinyl estradiol Cmax increased 17%; Norethindrone: no significant change

Green: Administer standard doses Administer standard doses
6266 Rilpivirine Simeprevir 651 Rilpivirine 25 mg daily x 11 days

Rilpivirine Cmin increased 25%

Simeprevir 150 mg daily x 11 days

No significant change

Green: Administer standard doses Administer standard doses
6267 Rilpivirine Sildenafil 652 Rilpivirine 75 mg daily

No significant change

Sildenafil 50 mg x 1

No significant change

Green: Administer standard doses Administer standard doses
6268 Rilpivirine Chlorzoxazone 653 Rilpivirine 150 mg daily

Rilpivirine AUC increased 25%; Cmin increased 18%; Cmax increased 17%

Chlorzoxazone 500 mg x 1

No significant change

Green: Administer standard doses Administer standard doses
6269 Rilpivirine SOF 654 Rilpivirine 25 mg daily Sofosbuvir 400 mg x 1

Sofosbuvir Cmax increased 21%

Green: Administer standard doses Administer standard doses
6270 Rilpivirine Famotidine 655 Rilpivirine 150 mg x 1

No significant change

Famotidine 40 mg x 1 taken 12 hours before rilpivirine Green: Administer standard doses Administer standard doses
6383 Atazanavir RFB 768 Atazanavir 400 mg daily on days 1-28

Atazanavir Cmax increased 34%

Rifabutin 150 mg daily on days 15-28

Not reported

Yellow: Adjust dosing Adjust dosing to avoid increased levels of rifabutin

Use rifabutin 150 mg once daily or 300 mg three times a week. Monitor for antimycobacterial activity and consider therapeutic drug monitoring.

6399 Atazanavir Omeprazole 784 Atazanavir 400 mg daily x 12 d

Atazanavir AUC decreased 94%, Cmax decreased 96%, Cmin decreased 95%

Omeprazole 40 mg daily x 5 d

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Do not coadminister PPIs with unboosted atazanavir. PPIs may be administered 12 hours before atazanavir when boosted with ritonavir or cobicistat, in treatment naive patients. Doses should not exceed the equivalent of omeprazole 20 mg daily. PPIs are not recommended for treatment experienced patients.

H2 receptor antagonists
6415 Atazanavir Lamotrigine 800 Atazanavir Atazanavir 400mg daily or Atazanavir 300 mg with Ritonavir 100 mg daily

No significant change

Lamotrigine 100 mg daily

AUC decreased 32%

Atazanavir with ritonavir may decrease lamotrigine plasma concentrations, Atazanavir without ritonavir is most likely not clinically significant

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of lamotrigine

No dose adjustment necessary if administering lamotrigine and atazanavir alone. If administering lamotrigine and atazanavir plus ritonovir, lamotrigine maintenance dose may need to be increased.

6431 Atazanavir Acetaminophen 816 Atazanavir 300 mg atazanavir daily with 100 mg ritonavir daily on d 11-20

Atazanavir Cmin increased 26%

Acetaminophen 1 gram BID on days 1-20 Green: Administer standard doses Administer standard doses
6447 Atazanavir St. John's Wort (Hypericum perforatum) 832 Atazanavir St. John's Wort

Potential loss of antiretroviral efficacy

Red: Avoid combination Do not coadminister: Potential for reduced levels of atazanavir

Contraindicated. Use alternative agents.

6463 Atazanavir Ticagrelor 848 Atazanavir Ticagrelor

Potential for increased risk of bleeding

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Use alternative agents

6479 Atazanavir Rivaroxaban 864 Atazanavir Rivaroxaban

Potential for increased risk of bleeding

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Consider using alternative agents

Dabigatran
6384 Atazanavir Rosuvastatin 769 Atazanavir 300 mg atazanavir daily with ritonavir 100 mg daily Rosuvastatin 10 mg daily

Rosuvastatin AUC increased 213%, Cmax increased 600%

Potential for increased rosuvastatin adverse effects (e.g. myopathy)

Yellow: Adjust dosing Adjust dosing to avoid increased levels of rosuvastatin

Initiate lowest dose and titrate carefully. Do not exceed 10mg rosuvastatin daily.

Pravastatin, atorvastatin
6400 Atazanavir Lansoprazole 785 Atazanavir 400 mg daily

Atazanavir AUC decreased 94%, Cmax decreased 91%, half-life: no significant change

Lansoprazole 60 mg daily x 2 doses

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Do not coadminister PPIs with unboosted atazanavir. PPIs may be administered 12 hours before atazanavir when boosted with ritonavir or cobicistat, in treatment naive patients. Doses should not exceed the equivalent of omeprazole 20 mg daily. PPIs are not recommended for treatment experienced patients.

H2 receptor antagonists
6416 Atazanavir Methadone 801 Atazanavir 400 mg daily on d 2-15 Methadone stable dose on d 1-15

Total methadone Cmax decresed 15%

Potential decreased methadone effects (withdrawl, inadequate pain control, cravings)

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of methadone

If coadministering monitor for signs and symptoms of methadone withdrawal. Some patients may require an increased methadone dose

6432 Atazanavir Alfuzosin 817 Atazanavir Alfuzosin Red: Avoid combination Do not coadminister: Increased levels of alfuzosin

Contraindicated. Use alternative agents.

6448 Atazanavir Phenobarbital 833 Atazanavir Phenobarbital

Potential loss of antiretroviral efficacy

Red: Avoid combination Do not coadminister: Potential for reduced levels of atazanavir

Contraindicated. Use alternative agents.

6464 Atazanavir Vorapaxar 849 Atazanavir Vorapaxar

Potential for increased risk of bleeding

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Use alternative agents

6480 Atazanavir Apixaban 865 Atazanavir Apixaban

Increased apixaban levels, Potential for increased risk of bleeding

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefitsÊof using this combination

Consider using alternative agents

Dabigatran
6369 Atazanavir DRV 754 Atazanavir 300 mg daily

Atazanavir Cmin increased 52%

Darunavir 400 mg BID with ritonavir 100 mg BID

No significant change

Yellow: Adjust dosing Adjust dosing to avoid increased levels of antiretrovirals

If used in combination, atazanavir may be given in conjunction with darunavir / ritonavir at study doses (300mg daily plus 400 / 100 mg daily)

6385 Atazanavir Sildenafil 770 Atazanavir Sildenafil

Potentially increased sildenafil effects (eg, hypotension, priapism)

Yellow: Adjust dosing Adjust dosing to avoid increased levels of sildenafil. (Do not coadminister for pulmonary hypertension)

For erectile dysfunction, initiate sildenafil (Viagra) 25 mg every 48 hours and monitor for adverse effects. Do not coadminister if using sildenafil for pulmonary arterial hypertension.

6401 Atazanavir Pantoprazole 786 Atazanavir Pantoprazole

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Do not coadminister PPIs with unboosted atazanavir. PPIs may be administered 12 hours before atazanavir when boosted with ritonavir or cobicistat, in treatment naive patients. Doses should not exceed the equivalent of omeprazole 20 mg daily. PPIs are not recommended for treatment experienced patients.

H2 receptor antagonists
6417 Atazanavir LDV/SOF 802 Atazanavir Atazanavir / ritonavir 300 mg / 100mg daily given simultaenously for 10 days plus emtricitabine / tenofovir DF 200mg / 300mg daily

Atazanavir AUC(tau) increased 43%

Ledipasvir / Sofosbuvir 90 / 400 mg

Ledipasvir AUC(tau) increased 134%, Cmax increased 75%

Potentially increased ledipasvir adverse effects. Potentially increased tenofovir disoproxil fumarate adverse effects if coadministered with protease inhibitor and ledipasvir.

Green: Administer standard doses Administer standard doses

If coadministering, monitor for tenofovir disoproxil fumarate toxicity if used in the regimen.

6433 Atazanavir Irinotecan 818 Atazanavir Irinotecan Red: Avoid combination Do not coadminister: Increased levels of irinotecan

Contraindicated. Use alternative agents.

6449 Atazanavir Phenytoin 834 Atazanavir Phenytoin

Potential loss of antiretroviral efficacy

Red: Avoid combination Do not coadminister: Potential for reduced levels of atazanavir

Contraindicated. Use alternative agents.

6465 Atazanavir Telithromycin 850 Atazanavir Telithromycin

Potential for increased telithromycin effects. (e.g. may cause QTc prolongation)

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Avoid combination or use alternative agents

6370 Atazanavir RTV 755 Atazanavir 300 mg daily on days 1-20

Atazanavir AUC increased 238%; Cmax increased 86%; Cmin increased 1089%

Ritonavir 100 mg daily on days 11-20

Not studied

Increased atazanavir effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of atazanavir

Dose atazanavir 300 mg once daily with ritonavir 100 mg daily

6386 Atazanavir Tadalafil 771 Atazanavir Tadalafil

Potentially increased tadalafill effects (eg, hypotension, priapism)

Yellow: Adjust dosing Adjust dosing to avoid increased tadalafil levels

For erectile dysfunction initiate tadalafil 5 mg dose and do not exceed 10 mg every 72 hours. Monitor adverse effects. For patients taking a protease inhibitor (stable > 7 days) requiring tadalafil for pulmonary arterial hypertension initiate 20 mg once daily and increase to 40 mg once daily based on tolerability. Patients currently on tadalafil who require a PI should stop tadalafil ³24 hours before PI initiation, take the PI for 7 days, then resume tadalafil at 20 mg. Maximum recommended daily dose for treatment of BPH is 2.5 mg daily.

6402 Atazanavir Rabeprazole 787 Atazanavir Rabeprazole

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Do not coadminister PPIs with unboosted atazanavir. PPIs may be administered 12 hours before atazanavir when boosted with ritonavir or cobicistat, in treatment naive patients. Doses should not exceed the equivalent of omeprazole 20 mg daily. PPIs are not recommended for treatment experienced patients.

H2 receptor antagonists
6418 Atazanavir LDV/SOF 803 Atazanavir Atazanavir / ritonavir 300 mg / 100mg daily given simultaenously for 10 days plus emtricitabine / tenofovir DF 200mg / 300mg daily

Atazanavir AUC increased 27%, Cmin increased 63%

Ledipasvir / Sofosbuvir 90 / 400 mg

Ledipasvir AUC(tau) increased 96%, Cmax increased 68%.

Potentially increased ledipasvir adverse effects. Potentially increased tenofovir disoproxil fumarate adverse effects if coadministered with protease inhibitor and ledipasvir.

Green: Administer standard doses Administer standard doses

If coadministering, monitor for tenofovir disoproxil fumarate toxicity if used in the regimen.

6434 Atazanavir SOF/VEL/VOX 819 Atazanavir Sofosbuvir / Velpatasvir / Voxilaprevir Red: Avoid combination Do not coadminister: Increased levels of voxilaprevir

Contraindicated. Use alternative agents.

6450 Atazanavir CBZ 835 Atazanavir Carbamazepine

Potential loss of antiviral efficacy

Red: Avoid combination Do not coadminister: Potential for reduced levels of atazanavir

Contraindicated. Use alternative agents.

6466 Atazanavir Atovaquone 851 Atazanavir 300 mg with 100 mg ritonavir daily

Not reported

Atovaquone 250 mg with 100 mg proguanil x 1

Atovaquone AUC decreased 46%, Cmax decreased 49%

Potential compromised antimalarial activity

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Dose adjustment not established. If coadministering monitor for anti-malarial efficacy.

6371 Atazanavir Clarithromycin 756 Atazanavir 400 mg daily on days 1-10

Atazanavir AUC increased 28%, Cmax no significant change, Cmin increased 91%

Clarithromycin 500 mg BID on days 7-11 and 18-21

Clarithromycin AUC increased 94%, Cmax increased 50%, Cmin decreased 62%, 14-hydroxyclarithromycin AUC decreased 70%, Cmax decreased 72%, Cmin increased 164%

Potential for increased clarithromycin effects. (e.g. may cause QTc prolongation).

Yellow: Adjust dosing Adjust dosing to avoid increased levels of clarithromycin

Reduce clarithromycin dose by 50%

Azithromycin
6387 Atazanavir Aluminum and magnesium hydroxide antacid 772 Atazanavir Aluminum and magnesium hydroxide antacid Yellow: Adjust dosing Adjust dosing to avoid reduced atazanavir levels

Separate administration of atazanavir / cobicistat and antacids by a minimum of 2 hours.

6403 Atazanavir EFV 788 Atazanavir 400 mg daily on days 1-6 then 300 mg with ritonavir 100 mg daily on days 7-20

Atazanavir (all values compared to atazanavir 400 mg daily) AUC increased 39% , Cmax no significant change, Cmin increased 48%

Efavirenz 600 mg daily x days 7-20

Not reported

Potential for increased atazanavir adverse effects

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

In ART-naive patients standard dose efavirenz may be used with atazanavir 400 mg boosted with ritonavir 100 mg once daily. Do not coadminister efavirenz plus ritonavir-boosted atazanavir in ART-experienced patients. Do not coadminister efavirenz with unboosted atazanavir.

6419 Atazanavir Posaconazole 804 Atazanavir 300 mg daily with 100 mg ritonavir daily

Atazanavir AUC increased 146%, Cmax increased 53%

Posaconazole 400 mg BID

Potential for increased atazanavir adverse effects

Green: Administer standard doses Administer standard doses

Monitor closely for atazanavir adverse effects during coadministration

6435 Atazanavir Triazolam 820 Atazanavir Triazolam

Potential for increased triazolam adverse effects (eg, increased sedation, confusion, respiratory depression)

Red: Avoid combination Do not coadminister: Potential for increased levels of triazolam

Contraindicated. Use alternative agents.

Lorazepam, Oxazepam, Temazepam, Trazodone
6451 Atazanavir RIF 836 Atazanavir 300 mg with 200 mg ritonavir daily x 10 d

Atazanavir AUC decreased 31%, Cmax decreased 40%, Cmin decreased 80%(compared to atazanavir 400 mg daily)

Rifampin 600 mg daily x 10 d

Not reported

Potential loss of antiretroviral efficacy

Red: Avoid combination Do not coadminister: Reduced levels of atazanavir

Contraindicated. Use alternative agents.

Rifabutin
6467 Atazanavir Digoxin 852 Atazanavir Digoxin

Potential for increased risk of digoxin toxicity

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering digoxin dose may need to be decreased. Monitor digoxin level and adjust digoxin dose based on clinical signs and drug levels.

6372 Atazanavir Colchicine 757 Atazanavir Colchicine

Potential for increased colchicine effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of colchicine

For treatment of gout, reduce colchicine dosage to 0.6 mg x 1 then 0.3 mg one hour later. Dose should not be repeated earlier than 3 days after. For gout prophylaxis, reduce colchicine dose to 0.3 mg daily if on 0.6 mg BID prior to PI therapy or reduce colchicine dose to 0.3 mg every other day if on 0.6 mg daily prior to PI therapy. For treatment of familial Mediterranean fever do not exceed colchicine 0.6 mg once daily or 0.3 mg BID. Do not coadminister in patients with hepatic or renal impairment.

6388 Atazanavir Bosentan 773 Atazanavir Bosentan

Potential decreased antiviral effects of atazanavir

Yellow: Adjust dosing Adjust dosing to avoid reduced atazanavir levels

Do not coadminister bosentan with unboosted atazanavir, For patients receiving atazanavir plus ritonavir for >10 days, start bosentan at 62.5mg daily or every other day based on individual tolerability, Discontinue bosentan at least 36 hours before starting atazanavir / ritonavir. At least 10 days after starting atazanavir / ritonavir, resume bosentan at 62.5mg daily or every other day based on individual tolerability.

6404 Atazanavir EFV 789 Atazanavir 400 mg daily on days 1-28

Atazanavir AUC increased 241%, Cmax increased 124%, Cmin increased 671%, half-life: increased 79%

Efavirenz 600 mg daily with ritonavir 200 mg on days 15-28

Not reported

Potential for increased atazanavir adverse effects

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

In ART-naive patients standard dose efavirenz may be used with atazanavir 400 mg boosted with ritonavir 100 mg once daily. Do not coadminister efavirenz plus ritonavir-boosted atazanavir in ART-experienced patients. Do not coadminister efavirenz with unboosted atazanavir.

6420 Atazanavir Posaconazole 805 Atazanavir 300 mg daily

Atazanavir AUC increased 268%, Cmax increased 155%

Posaconazole 400 mg BID

Potential for increased atazanavir adverse effects

Green: Administer standard doses Administer standard doses

Monitor closely for atazanavir adverse effects during coadministration

6436 Atazanavir RTV 821 Atazanavir

Not studied; Potential increased atazanavir levels)

Ritonavir

Potential atazanavir-associated adverse effects (hyperbilirubinemia, GI upset, etc.)

Red: Avoid combination Do not coadminister: Potential for increased levels of atazanavir

Do not coadminister ritonavir or ritonavir containing products with atazanavir / cobicistat

6452 Atazanavir RIF 837 Atazanavir 300 mg with 100 mg ritonavir daily x 10 d

Atazanavir AUC decreased 57%, Cmax decreased 56%, Cmin decreased 93%(compared to atazanavir 400 mg daily)

Rifampin 600 mg daily x 10 d

Not reported

Potential loss of antiretroviral efficacy

Red: Avoid combination Do not coadminister: Reduced levels of atazanavir

Contraindicated. Use alternative agents.

Rifabutin
6468 Atazanavir Proguanil 853 Atazanavir 300 mg with 100 mg ritonavir daily

Not reported

Proguanil 100 mg with 250 mg atovaquone x 1

Proguanil AUC decreased 41%, Cmax no significant change

Potentially compromised antimalarial activity

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering monitor for anti-malarial efficacy

6373 Atazanavir Daclatasvir 758 Atazanavir Daclatasvir Yellow: Adjust dosing Adjust dosing to avoid increased levels of daclatasvir

Decrease daclatasvir dose to 30 mg daily

6389 Atazanavir Cimetidine 774 Atazanavir Cimetidine

Potential loss of antiviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced atazanavir levels

Unboosted atazanavir 400 mg: give atazanavir 2 hrs before or 10 hours after H2-blocker. Single doses of H2-blockers should not exceed 20 mg of famotidine (or equivalent). Additionally, if treatment naive, total daily dose of H2 blocker should not exceed 40 mg of famotidine (or equivalent). Atazanavir 300 mg boosted with ritonavir or cobicistat: Give boosted atazanavir at same time as H2 blocker or 10 hours or more after. Total doses of H2 blocker should not exceed the equivalent of 40 mg BID famotidine (treatment naive) or 20 mg BID for (treatment experienced patients). If using tenofovir disoproxil fumarate, atazanavir, and H2 blocker in treatment experienced patient, increase atazanavir dose to 400 mg in addition to boosting with ritonavir or cobicistat.

6405 Atazanavir EFV 790 Atazanavir 400 mg daily on days 1-20

Atazanavir AUC decreased 74%, Cmax decreased 59%, Cmin decreased 93%, half-life: decreased 27%

Efavirenz 600 mg daily on days 7-20

No significant change

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

In ART-naive patients standard dose efavirenz may be used with atazanavir 400 mg boosted with ritonavir 100 mg once daily. Do not coadminister efavirenz plus ritonavir-boosted atazanavir in ART-experienced patients. Do not coadminister efavirenz with unboosted atazanavir.

6421 Atazanavir Rosiglitazone 806 Atazanavir 300 mg daily with 100 mg ritonavir daily Rosiglitazone 4 mg x 1

Rosiglitazone AUC decreased 17%

Potential decreased glycemic control

Green: Administer standard doses Administer standard doses

Monitor for anti-diabetic agent efficacy if using unboosted atazanavir, and toxicity if using unboosted atazanavir

6437 Atazanavir Ergotamine 822 Atazanavir Ergotamine

Potential for increased ergotamine effects (eg, ergotism)

Red: Avoid combination Do not coadminister: Potential for increased levels of ergotamine

Contraindicated. Use alternative agents.

5-HT agonists ("triptans")
6453 Atazanavir RIF 838 Atazanavir 300 mg with 100 mg ritonavir daily x 21 d

Atazanavir AUC decreased 72%, Cmax decreased 53%, Cmin decreased 98%

Rifampin 600 mg daily x 10 d

Not reported

Potential loss of antiretroviral efficacy

Red: Avoid combination Do not coadminister: Reduced levels of atazanavir

Contraindicated. Use alternative agents.

Rifabutin
6469 Atazanavir Disopyramide 854 Atazanavir Disopyramide

Potential for increased risk of disopyramide adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering use with caution and monitor for disopyramide toxicity

6374 Atazanavir Daclatasvir 759 Atazanavir 300 mg with ritonavir 100 mg daily

No significant change

Daclatasvir 20 mg daily

AUC(tau) increased 110%

Yellow: Adjust dosing Adjust dosing to avoid increased levels of daclatasvir

Decrease daclatasvir dose to 30 mg daily when used with atazanavir / ritonavir. No dose adjustment necessary if used with unboosted atazanavir.

6390 Atazanavir TDF 775 Atazanavir 300 mg daily with ritonavir 100 mg daily on days 1-42

Atazanavir Cmax decreased 28%, AUC decreased 25%, Cmin decreased 26%, Ritonavir Cmax decreased 28%, AUC decreased 25%, Cmin no significant change

Tenofovir Disoproxil Fumarate 300 mg daily on days 15-42

Not reported

Potential loss of antiretroviral efficacy with lower atazanavir concentrationss. Potential for increased tenofovir adverse effects

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Administer 300 mg atazanavir with 100 mg ritonavir when used as part of a tenofovir containing regimen. Do not coadminister TDF with unboosted atazanavir (400 mg).

6406 Atazanavir EFV 791 Atazanavir 600 mg daily on days 7-20

Atazanavir (all values compared to atazanavir 400 mg daily) AUC decreased 21%, Cmax no significant change, Cmin decreased 59%

Efavirenz 600 mg daily on days 7-20

Not reported

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

In ART-naive patients standard dose efavirenz may be used with atazanavir 400 mg boosted with ritonavir 100 mg once daily. Do not coadminister efavirenz plus ritonavir-boosted atazanavir in ART-experienced patients. Do not coadminister efavirenz with unboosted atazanavir.

6422 Atazanavir Rosiglitazone 807 Atazanavir 400 mg daily Rosiglitazone 4 mg x 1

Rosiglitazone AUC increased 35%

Potential for increased rosiglitazone adverse effects

Green: Administer standard doses Administer standard doses

Monitor for anti-diabetic agent efficacy if using unboosted atazanavir, and toxicity if using unboosted atazanavir

6438 Atazanavir EBR/GZR 823 Atazanavir 300 mg daily with ritonavir 100 mg daily

ATV AUC increased 43% by grazoprevir

Elbasvir / Grazoprevir Elbasvir 50 mg daily with grazoprevir 200 mg daily

Elbasvir AUC increased by 4.76-fold, Grazoprevir AUC increased by 10.58-fold

May increase risk of ALT elevations due to a significant increase in grazoprevir plasma concentrations caused by OATP1B1 / 3 inhibition

Red: Avoid combination Do not coadminister: Potential for increased levels of grazoprevir

Contraindicated. Use alternative agents.

6454 Atazanavir RIF 839 Atazanavir 400 mg with 200 mg ritonavir daily x 10 d

Atazanavir AUC no significant change, Cmax decreased 18%, Cmin decreased 40%(compared to atazanavir 400 mg daily)

Rifampin 600 mg daily x 10 d

Not reported

Potential loss of antiretroviral efficacy

Red: Avoid combination Do not coadminister: Reduced levels of atazanavir

Contraindicated. Use alternative agents.

Rifabutin
6470 Atazanavir Mexiletine 855 Atazanavir Mexiletine

Potential for increased risk of mexiletine adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering use with caution and monitor for mexiletine toxicity

6375 Atazanavir Diltiazem 760 Atazanavir 400 mg daily on days 1-11

No significant change

Diltiazem 180 mg daily on days 7-11 and 19-23

Diltiazem AUC increased 125%, Cmax increased 198%, Cmin decreased 59%

Potential for increased diltiazem effects (eg, hypotension, heart block)

Yellow: Adjust dosing Adjust dosing to avoid increased levels of diltiazem

Reduce diltiazem dose by 50%. ECG monitoring is recommended.

6391 Atazanavir Pantoprazole 776 Atazanavir Pantoprazole Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Administer proton pump inhibitor at least 12 hours before atazanavir / cobicistat. Proton pump inhibitors should not exceed a dose equivalent to omeprazole 20 mg daily in protease inhibitor naive patients. Proton pump inhibitors are not recommended in protease inhibitor experienced patients.

6407 Atazanavir Famotidine 792 Atazanavir 300 mg daily with ritonavir 100 mg daily on d 1-20 (simultaneous administration)

Atazanavir AUC decreased 18%, Cmax no significant change, Cmin decreased 28%

Famotidine 40 mg BID on d 11-20

Not reported

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Unboosted atazanavir: administer dose 2 hrs before or 10 hours after the H2-blocker. H2 blocker single dose should not exceed 20 mg famotidine and total daily dose should not exceed 40 mg famotidine (treatment naive patients). Ritonavir or cobicistat boosted atazanavir: administer dose simultaneously with or > 10 hours after H2 blocker. Do not exceed H2 blocker doses of 80 mg famotidine daily (treatment naive) or 40 mg famotidine daily (treatment experienced). If using in a treatment-experienced patient who is also on TDF, increase atazanavir dose to 400 mg with boosting.

6423 Atazanavir Dabigatran 808 Atazanavir Dabigatran

Potential for increased risk of bleeding

Green: Administer standard doses Administer standard doses

No dose adjustment if CrCL < 50 ml / min. Avoid concomitant use if CrCl > 50ml / min.

6439 Atazanavir NVP 824 Atazanavir Nevirapine Elbasvir 50 mg daily with grazoprevir 200 mg daily

Elbasvir AUC increased by 4.76-fold, Grazoprevir AUC increased by 10.58-fold

May increase risk of ALT elevations due to a significant increase in grazoprevir plasma concentrations caused by OATP1B1 / 3 inhibition

Red: Avoid combination Do not coadminister: Potential for increased levels of grazoprevir

Contraindicated. Use alternative agents.

6455 Atazanavir EVG/c 840 Atazanavir 300 mg daily

Atazanavir Cmax decreased 24%, Cmin decreased 20%

Elvitegravir / Cobicistat / Emtricitabine / Tenofovir alafenamide Elvitegravir 85 mg daily with cobicistat 150 mg daily

Elvitegravir AUC increased 17%, Cmax decreased 16%, Cmin increased 83%

Potential loss of antiretroviral efficacy

Red: Avoid combination Do not coadminister: Reduced levels of atazanavir

Use alternative agents

6471 Atazanavir Flecainide 856 Atazanavir Flecainide

Potential for increased risk of flecainide adverse effects (eg, cardiac arrhythmias)

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering use with caution and monitor for toxicity. Consider therapeutic drug monitoring

6376 Atazanavir Ethinyl estradiol / Norethindrone acetate 761 Atazanavir 400 mg daily x 14 days Ethinyl estradiol / Norethindrone acetate 1 tab daily (7 / 7 / 7)

Norethindrone Cmax increased 67%, AUC increased 110%, Cmin increased 262%, Ethinyl estradiol AUC increased 48%, Cmax no significant change, Cmin increased 91%

Increased norethindrone and ethinyl estradiol effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of hormonal contraception

For unboosted atazanavir, use an oral contraceptive that contains no more than 30 mcg of ethinyl estradiol or recommend an alternative contraceptive method. Oral contraceptives containing less than 25mcg of ethinyl estradiol or progestins other than norethindrone or norgestimate have not been studied.

Non hormonal contraceptive method, barrier devices, condoms
6392 Atazanavir Esomeprazole 777 Atazanavir Esomeprazole

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Do not coadminister PPIs with unboosted atazanavir. PPIs may be administered 12 hours before atazanavir if boosted with ritonavir or cobicistat, in treatment naive patients. Doses should not exceed the equivalent of omeprazole 20 mg daily. PPIs are not recommended for treatment experienced patients.

H2 blockers
6408 Atazanavir Famotidine 793 Atazanavir 400 mg daily

Atazanavir AUC decreased 38%, Cmax decreased 42%, Cmin decreased 40%

Famotidine 40 mg Q12H

Not reported

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Unboosted atazanavir: administer dose 2 hrs before or 10 hours after the H2-blocker. H2 blocker single dose should not exceed 20 mg famotidine and total daily dose should not exceed 40 mg famotidine (treatment naive patients). Ritonavir or cobicistat boosted atazanavir: administer dose simultaneously with or > 10 hours after H2 blocker. Do not exceed H2 blocker doses of 80 mg famotidine daily (treatment naive) or 40 mg famotidine daily (treatment experienced). If using in a treatment-experienced patient who is also on TDF, increase atazanavir dose to 400 mg with boosting.

6424 Atazanavir Dabigatran 809 Atazanavir Dabigatran

Potential for increased risk of bleeding

Green: Administer standard doses Administer standard doses

No dose adjustment if CrCL < 50 ml / min. Avoid concomitant use if CrCl > 50ml / min.

6440 Atazanavir HMG-CoA Reductase Inhibitors 825 Atazanavir Lovastatin

Increased lovastatin effects (eg, myopathy, rhabdomyolysis)

Red: Avoid combination Do not coadminister: Potential for increased levels of lovastatin

Contraindicated. Use alternative agents.

Atorvastatin (low dose), Pravastatin
6456 Atazanavir ETR 841 Atazanavir 400 mg daily

Atazanavir AUC decreased 17%, Cmin decreased 47%

Etravirine

Etravirine AUC increased 50%, Cmax increased 47%, Cmin increased 58%

Potential increased etravirine effects, decreased atazanavir effects

Red: Avoid combination Do not coadminister: Reduced levels of atazanavir and increased levels of etravirine

Use alternative agents

6472 Atazanavir Lidocaine 857 Atazanavir Lidocaine Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering use with caution. Monitor adverse effects and consider therapeutic drug monitoring.

6377 Atazanavir Itraconazole 762 Atazanavir Itraconazole Yellow: Adjust dosing Adjust dosing to avoid increased levels of itraconazole

Unless guided by therapeutic drug monitoring, limit doses of itraconazole to less than 200 mg daily when used with atazanavir / cobicistat.

6393 Atazanavir Omeprazole 778 Atazanavir 400 mg daily on d 1-12

Not reported

Omeprazole 40 mg x 1 on d 7 and 20

Omeprazole AUC increased 45%, Cmax increased 24%

Increased omeprazole effects

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Do not coadminister PPIs with unboosted atazanavir. PPIs may be administered 12 hours before atazanavir when boosted with ritonavir or cobicistat, in treatment naive patients. Doses should not exceed the equivalent of omeprazole 20 mg daily. PPIs are not recommended for treatment experienced patients.

H2 receptor antagonists
6409 Atazanavir Famotidine 794 Atazanavir 300 mg daily with 100 mg ritonavir daily with tenofovir on d 11-17

Atazanavir AUC decreased 41%

Famotidine 20 mg BID on d 11-17

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Unboosted atazanavir: administer dose 2 hrs before or 10 hours after the H2-blocker. H2 blocker single dose should not exceed 20 mg famotidine and total daily dose should not exceed 40 mg famotidine (treatment naive patients). Ritonavir or cobicistat boosted atazanavir: administer dose simultaneously with or > 10 hours after H2 blocker. Do not exceed H2 blocker doses of 80 mg famotidine daily (treatment naive) or 40 mg famotidine daily (treatment experienced). If using in a treatment-experienced patient who is also on TDF, increase atazanavir dose to 400 mg with boosting.

6425 Atazanavir DTG 810 Atazanavir 300 mg daily with ritonavir 100 mg daily

Not reported

Dolutegravir 30 mg daily

Dolutegravir AUC increased 62%, Cmax increased 34%, Cmin increased 121%

Green: Administer standard doses Administer standard doses
6441 Atazanavir Lurasidone 826 Atazanavir Lurasidone

Potential increased in pimozide adverse effects (eg, hypotension, cardiac arrhythmias)

Red: Avoid combination Do not coadminister: Potential for increased levels of lurasidone

Contraindicated. Use alternative agents.

6457 Atazanavir Erythromycin 842 Atazanavir Erythromycin Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Avoid combination, use alternative antibiotics

Azithromycin
6473 Atazanavir Amiodarone 858 Atazanavir Amiodarone

Potential for increased amiodarone effects (eg, hypotension, bradycardia, cardiac arrhythmias)

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering use with caution. Monitor for amiodarone toxicity. Consider ECG and amiodarone drug level monitoring.

6378 Atazanavir MVC 763 Atazanavir 400 mg daily

Not reported

Maraviroc 300 mg BID

Maraviroc AUC increased 257%, Cmax increased 109%, Cmin increased 319%

Potential increase in maraviroc adverse effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of maraviroc

Decrease maraviroc dose to 150 mg BID

6394 Atazanavir Omeprazole 779 Atazanavir 300 mg daily with 100 mg ritonavir daily on d 7-16 then 400 mg atazanavir daily with 100 mg ritonavir daily on d 17-23

Atazanavir AUC decreased 30%, Cmin decreased 31%, Cmax decreased 31%

Omeprazole 20 mg daily on d 17-23

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Do not coadminister PPIs with unboosted atazanavir. PPIs may be administered 12 hours before atazanavir when boosted with ritonavir or cobicistat, in treatment naive patients. Doses should not exceed the equivalent of omeprazole 20 mg daily. PPIs are not recommended for treatment experienced patients.

H2 receptor antagonists
6410 Atazanavir Famotidine 795 Atazanavir 400 mg daily on d 1-12 (simultaneous administration)

Atazanavir AUC decreased 41%, Cmax decreased 47%, Cmin decreased 42%

Famotidine 40 mg BID on d 7-12

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Unboosted atazanavir: administer dose 2 hrs before or 10 hours after the H2-blocker. H2 blocker single dose should not exceed 20 mg famotidine and total daily dose should not exceed 40 mg famotidine (treatment naive patients). Ritonavir or cobicistat boosted atazanavir: administer dose simultaneously with or > 10 hours after H2 blocker. Do not exceed H2 blocker doses of 80 mg famotidine daily (treatment naive) or 40 mg famotidine daily (treatment experienced). If using in a treatment-experienced patient who is also on TDF, increase atazanavir dose to 400 mg with boosting.

6426 Atazanavir DTG 811 Atazanavir 400 mg daily

Not reported

Dolutegravir 30 mg daily

Dolutegravir AUC increased 91%, Cmax increased 50%, Cmin increased 180%

Green: Administer standard doses Administer standard doses
6442 Atazanavir Pimozide 827 Atazanavir Pimozide

Potential increased in pimozide adverse effects (eg, hypotension, cardiac arrhythmias)

Red: Avoid combination Do not coadminister: Potential for increased levels of pimozide

Contraindicated. Use alternative agents.

6458 Atazanavir Apixaban 843 Atazanavir Apixaban

Potential for increased risk of bleeding

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Avoid combination, use alternative anticoagulant

Dabigatran
6474 Atazanavir Propafenone 859 Atazanavir Propafenone

Potential for increased propafenone effects (eg, cardiac arrhythmias)

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering use with caution. Monitor for toxicity.

6379 Atazanavir MVC 764 Atazanavir 300 mg daily with 100 mg ritonavir daily

Not reported

Maraviroc 300 mg BID

Maraviroc AUC increased 388%, Cmax increased 167%, Cmin increased 567%

Potential increase in maraviroc adverse effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of maraviroc

Decrease maraviroc dose to 150 mg BID

6395 Atazanavir Omeprazole 780 Atazanavir 300 mg QPM with 100 mg ritonavir QPM on d 7-16, 17-23

Atazanavir AUC decreased 42%, Cmax decreased 39%, Cmin decreased 46%

Omeprazole 20 mg daily on d 17-23

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Do not coadminister PPIs with unboosted atazanavir. PPIs may be administered 12 hours before atazanavir when boosted with ritonavir or cobicistat, in treatment naive patients. Doses should not exceed the equivalent of omeprazole 20 mg daily. PPIs are not recommended for treatment experienced patients.

H2 receptor antagonists
6411 Atazanavir Famotidine 796 Atazanavir 400 mg on d 1-6, d 7-12 (10 hr after, 2 hrs before famotidine)

Atazanavir Cmin decreased 31%

Famotidine 40 mg daily on d 7-12

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Unboosted atazanavir: administer dose 2 hrs before or 10 hours after the H2-blocker. H2 blocker single dose should not exceed 20 mg famotidine and total daily dose should not exceed 40 mg famotidine (treatment naive patients). Ritonavir or cobicistat boosted atazanavir: administer dose simultaneously with or > 10 hours after H2 blocker. Do not exceed H2 blocker doses of 80 mg famotidine daily (treatment naive) or 40 mg famotidine daily (treatment experienced). If using in a treatment-experienced patient who is also on TDF, increase atazanavir dose to 400 mg with boosting.

6427 Atazanavir SOF/VEL 812 Atazanavir 300 mg with ritonavir 100 mg daily

Atazanavir Cmax increased 9%, AUC increased 20%, Cmin increased 39%.

Sofosbuvir / Velpatasvir 400 mg / 100 mg

Sofosbuvir AUC increased 22%. Velpatasvir Cmax increased 55%, AUC increased 142%, Cmin increased 301%

Green: Administer standard doses Administer standard doses
6443 Atazanavir Quetiapine 828 Atazanavir Quetiapine

Increased quentiapine effects.

Red: Avoid combination Do not coadminister: Potential for increased levels of quentiapine. If coadministration is necessary: reduce dose to 1 / 6 of current dose.

Contraindicated. Use alternative agents.

6459 Atazanavir Phenytoin 844 Atazanavir Phenytoin

Potential loss of antiretroviral efficacy

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Avoid combination or use alternative agents

Gabapentin Lamotrigine Tiagabine Topiramate
6475 Atazanavir Quinidine 860 Atazanavir Quinidine

Potential for increased quinidine effects (e.g. cardiac arrhythmias)

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering use with caution. Monitor for toxicity.

6380 Atazanavir Pitavastatin 765 Atazanavir 300 mg daily x 5 days

No significant change

Pitavastatin 4 mg daily

Pitavastatin AUC increased 31%, Cmax increased 60%

Potential for increased pitavastatin adverse effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of pitavastatin

Start at lowest dose and titrate to effect

6396 Atazanavir Omeprazole 781 Atazanavir 400 mg daily with ritonavir 100 mg daily x 20 d

Atazanavir AUC decreased 61%, Cmax decreased 56%, Cmin decreased 66%

Omeprazole 40 mg daily x 10 d

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Do not coadminister PPIs with unboosted atazanavir. PPIs may be administered 12 hours before atazanavir when boosted with ritonavir or cobicistat, in treatment naive patients. Doses should not exceed the equivalent of omeprazole 20 mg daily. PPIs are not recommended for treatment experienced patients.

H2 receptor antagonists
6412 Atazanavir Famotidine 797 Atazanavir 400 mg atazanavir with 100 mg ritonavir on d 11-20

Atazanavir AUC no significant change, Cmax no significant change, Cmin decreased 14%(compared to 300 mg atazanavir with 100 mg ritonavir daily)

Famotidine 40 mg Q12H on d 11-20

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Unboosted atazanavir: administer dose 2 hrs before or 10 hours after the H2-blocker. H2 blocker single dose should not exceed 20 mg famotidine and total daily dose should not exceed 40 mg famotidine (treatment naive patients). Ritonavir or cobicistat boosted atazanavir: administer dose simultaneously with or > 10 hours after H2 blocker. Do not exceed H2 blocker doses of 80 mg famotidine daily (treatment naive) or 40 mg famotidine daily (treatment experienced). If using in a treatment-experienced patient who is also on TDF, increase atazanavir dose to 400 mg with boosting.

6428 Atazanavir Atenolol 813 Atazanavir 400 mg daily on days 1-11

Atazanavir AUC no significant change, Cmax no significant change, Cmin decreased 26%

Atenolol 50 mg daily on days 7-11 and 19-23

Atenolol AUC increased 25%, Cmax increased 34%, Cmin no significant change

Green: Administer standard doses Administer standard doses
6444 Atazanavir Ranolazine 829 Atazanavir Ranolazine

Potential increase in ranolazine adverse effects (e.g. prolonged QT, cardiac arrythmias).

Red: Avoid combination Do not coadminister: Potential for increased levels of ranolazine

Contraindicated. Use alternative agents.

6460 Atazanavir Phenobarbital 845 Atazanavir Phenobarbital

Potential loss of antiretroviral efficacy

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Avoid combination or use alternative agents

Gabapentin Lamotrigine Tiagabine Topiramate
6476 Atazanavir Midazolam 861 Atazanavir Midazolam

Potential for increased midazolam effects (eg, increased sedation, confusion, respiratory depression)

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Parenteral midazolam can be used with caution when given as a single dose in a monitored situation for procedural sedation. Chronic midazolam administration (oral or intravenous) should be avoided.

Lorazepam, Oxazepam, Temazepam, Trazodone
6381 Atazanavir RFB 766 Atazanavir 600 mg daily on days 11-20

Not reported

Rifabutin 300 mg daily on days 1-10, then 150 mg daily on days 11-20

Rifabutin AUC increased 110%, Cmax increased 118%, Cmin increased 243%, 25-O-desacetylrifabutin AUC increased 2101%, Cmax increased 720%, Cmin increased 7460%

Increased rifabutin effects (eg, uveitis)

Yellow: Adjust dosing Adjust dosing to avoid increased levels of rifabutin

Use rifabutin 150 mg once daily or 300 mg three times a week. Monitor for antimycobacterial activity and consider therapeutic drug monitoring.

6397 Atazanavir Omeprazole 782 Atazanavir 300 mg with ritonavir 100 mg daily with 8 oz cola x 20 d

Atazanavir AUC decreased 70%, Cmax decreased 66%, Cmin decreased 76%

Omeprazole 40 mg daily x 10 d

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Do not coadminister PPIs with unboosted atazanavir. PPIs may be administered 12 hours before atazanavir when boosted with ritonavir or cobicistat, in treatment naive patients. Doses should not exceed the equivalent of omeprazole 20 mg daily. PPIs are not recommended for treatment experienced patients.

H2 receptor antagonists
6413 Atazanavir Famotidine 798 Atazanavir 300 mg daily with 100 mg ritonavir

No significant change

Famotidine 20 mg BID on d 11-17 (simultaneous administration with morning atazanavir / ritonavir) Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Unboosted atazanavir: administer dose 2 hrs before or 10 hours after the H2-blocker. H2 blocker single dose should not exceed 20 mg famotidine and total daily dose should not exceed 40 mg famotidine (treatment naive patients). Ritonavir or cobicistat boosted atazanavir: administer dose simultaneously with or > 10 hours after H2 blocker. Do not exceed H2 blocker doses of 80 mg famotidine daily (treatment naive) or 40 mg famotidine daily (treatment experienced). If using in a treatment-experienced patient who is also on TDF, increase atazanavir dose to 400 mg with boosting.

6429 Atazanavir Fluconazole 814 Atazanavir 300 mg daily with ritonavir 100 mg daily x 10 days

No significant change

Fluconazole 200 mg daily x 10 days

No significant change

Green: Administer standard doses Administer standard doses
6445 Atazanavir Salmeterol 830 Atazanavir Salmeterol

QT prolongation, palpitations, and sinus tachycardia.

Red: Avoid combination Do not coadminister: Potential for increased levels of salmeterol

Contraindicated. Use alternative agents.

6461 Atazanavir Clarithromycin 846 Atazanavir Clarithromycin Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Consider alternative antibiotics

Azithromycin
6477 Atazanavir Fluticasone 862 Atazanavir Fluticasone

Decreased plasma cortisol concentrations (eg, Cushing's syndrome, adrenal suppression)

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Use with caution with atazanavir, use with atazanavir / ritonavir is not recommended unless the potential benefit outweighs the risk

Beclomethasone
6382 Atazanavir RFB 767 Atazanavir 400 mg daily on days 1-14, 400 mg daily with ritonavir 100 mg daily on days 15-28

Atazanavir AUC increased 191%, Cmax increased 81%

Rifabutin 150 mg daily on days 15-28

Not reported

Potential increase in atazanavir adverse effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of rifabutin

Use rifabutin 150 mg once daily or 300 mg three times a week. Monitor for antimycobacterial activity and consider therapeutic drug monitoring.

6398 Atazanavir Omeprazole 783 Atazanavir 300 mg daily with ritonavir 100 mg daily x 20 d

Atazanavir AUC decreased 76%, Cmax decreased 72%, Cmin decreased 78%

Omeprazole 40 mg daily x 10 d

Potential loss of antiretroviral efficacy

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of atazanavir

Do not coadminister PPIs with unboosted atazanavir. PPIs may be administered 12 hours before atazanavir when boosted with ritonavir or cobicistat, in treatment naive patients. Doses should not exceed the equivalent of omeprazole 20 mg daily. PPIs are not recommended for treatment experienced patients.

H2 receptor antagonists
6414 Atazanavir EE/NGM 799 Atazanavir 300 mg atazanavir daily with 100 mg ritonavir daily Ethinyl estradiol / Norgestimate

Ethinyl estradiol AUC decreased 19%, Cmax decreased 16%, Cmin decreased 37% 17-deacetyl norgestimate AUC increased 85%, Cmax increased 68%, Cmin increased 102%

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of hormonal contraception

With ritonavir boosted atazanavir, use an oral contraceptive containing at least 35 mcg of ethinyl estradiol. Oral contraceptives containing progestins other than norethindrone or norgestimate have not been studied.

Non-hormonal contraceptives, barrier devices, condoms
6430 Atazanavir Ketoconazole 815 Atazanavir 400 mg daily on days 1-13

No significant change

Ketoconazole 200 mg daily on days 7-13

Not reported

Green: Administer standard doses Administer standard doses
6446 Atazanavir Simvastatin 831 Atazanavir Simvastatin

Potential Increased simvastatin effects (eg, myopathy, rhabdomyolysis)

Red: Avoid combination Do not coadminister: Potential for increased levels of simvastatin

Contraindicated. Use alternative agents.

Atorvastatin (low dose), Pravastatin
6462 Atazanavir Dasabuvir + Ombitasvir / Paritaprevir / Ritonavir 847 Atazanavir Dasabuvir + Ombitasvir / Paritaprevir / Ritonavir Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Do not coadminister

6478 Atazanavir Voriconazole 863 Atazanavir Voriconazole 200 mg PO Q12H

Voriconazole AUC decreased 39% when given with ritonavir 100 mg BID

Potential decreased voriconazole antifungal effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

With unboosted atazanavir no dose adjustment necessary, monitor for toxicity. Do not coadminister with boosted protease inhibitors unless benefit outweighs risks. Consider therapeutic drug monitoring.

6495 Darunavir Clarithromycin 880 Darunavir 400 mg with 100 mg ritonavir BID

Cmax decrease 17%, AUC decrease 13%, Cmin increase 1%

Clarithromycin 500 mg BID

Cmax increase 26%, AUC increased 57%, Cmin increase 174%

Increased risk of antibacterial adverse effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of clarithromycin

In patients with CrCl 30-60 mL / min, reduce dose of clarithromycin by 50%. In patients with CrCl <30 mL / min, reduce clarithromycin dose by 75%. Monitor for clarithromycin-related toxicities and / or consider alternative macrolide.

Azithromycin
6511 Darunavir Methadone 896 Darunavir 600 mg with 100 mg ritonavir BID

Not reported

Methadone 55-200 mg once daily (stable dose)

R-methadone: Cmax decrease 24%, AUC decrease 16%, Cmin decrease 15%; S-methadone: Cmax decrease 44%, AUC decrease 36%, Cmin decrease 40%

May decrease methadone effects (e.g. withdrawal)

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of methadone

If coadministering monitor for signs and symptoms of methadone withdrawal. Some patients may require an increased methadone dose

6527 Darunavir SOF 912 Darunavir 800 mg with 100 mg ritonavir once daily

No significant change

Sofosbuvir 400 mg x 1

Cmax increase 45%, AUC increase 34%

Green: Administer standard doses Administer standard doses
6543 Darunavir Eplerenone 928 Darunavir Eplerenone

Potential for increased risk of eplerenone adverse effects

Red: Avoid combination Do not coadminister: Potential for increased eplerenone levels

Contraindicated. Use alternative agents.

6559 Darunavir Terfenadine 944 Darunavir Terfenadine

Potential for increased risk of terfenadine adverse effects (e.g. cardiac arrhythmias)

Red: Avoid combination Do not coadminister: Potential for increased levels of terfendaine

Use alternative agents

Cetirizine, Fexofenadine, Loratadine
6575 Darunavir Voriconazole 960 Darunavir Voriconazole

Potential decreased voriconazole effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Avoid coadministering with boosted protease inhibitors unless benefit outweighs risks. If coadministering, consider therapeutic drug monitoring.

6591 Darunavir Oxycodone 976 Darunavir Oxycodone

Potential for increased risk of oxycodone adverse effects (e.g. respiratory depression)

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Clinical monitoring is recommended

6607 Darunavir Salmeterol 992 Darunavir Salmeterol

Potential for increased risk of salmeterol adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Use alternative agents

6623 Darunavir Diazepam 1008 Darunavir Diazepam

Potential for increased risk of diazepam adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, initiate diazepam at low dose and titrate to effect

Lorazepam, Oxazepam, Temazepam
6639 Darunavir Verapamil 1024 Darunavir Verapamil

Potential for increased risk of verapamil adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, monitor verapamil adverse effects

6496 Darunavir Colchicine 881 Darunavir Colchicine

Increased risk of colchicine adverse effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of colchicine

For treatment of gout, reduce colchicine dosage to 0.6 mg x 1 then 0.3 mg one hour later. Dose should not be repeated earlier than 3 days after. For gout prophylaxis, reduce colchicine dose to 0.3 mg daily if on 0.6 mg BID prior to PI therapy or reduce colchicine dose to 0.3 mg every other day if on 0.6 mg daily prior to PI therapy. For treatment of familial Mediterranean fever do not exceed colchicine 0.6 mg once daily or 0.3 mg BID. Do not coadminister in patients with hepatic or renal impairment.

6512 Darunavir Paroxetine 897 Darunavir 600 mg with 100 mg ritonavir BID

No significant change

Paroxetine 20 mg once daily

Cmax decrease 36%, AUC decrease 39%, Cmin decrease 37%

Potential decreased paroxetine effects

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of paroxetine

Titrate paroxetine to effect; monitor for continued antidepressant response if darunavir / ritonavir initiated

6528 Darunavir LDV/SOF 913 Darunavir 800 mg with 100 mg ritonavir once daily

No significant change

Ledipasvir / Sofosbuvir 90 / 400 mg once daily

Ledipasvir Cmax increase 45%, AUC increase 39%, Cmin increase 39%; Sofosbuvir Cmax increase 45%, AUC increase 34%

Green: Administer standard doses Administer standard doses
6544 Darunavir Everolimus 929 Darunavir

Not studied

Everolimus

Not studied (may increase everolimus levels)

Potential for increased risk of everolimus adverse effects

Red: Avoid combination Do not coadminister: Potential for increased everolimus levels

Use alternative agents

6560 Darunavir Triazolam 945 Darunavir Triazolam

Potential for increased risk of triazolam adverse effects (e.g. increased sedation, confusion, respiratory depression)

Red: Avoid combination Do not coadminister: Potential for increased levels of triazolam

Contraindicated. Use alternative agents.

Lorazepam, Oxazepam, Temazepam
6576 Darunavir Phenobarbital 961 Darunavir Phenobarbital

Potential loss of antiviral efficacy, Potential for decreased phenobarbital effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Avoid combination and use alternative agents. If coadministering, monitor and adjust phenytoin levels as indicated and monitor viral load.

Gabapentin, Lamotrigine, Tiagabine, Topiramate
6592 Darunavir Tramadol 977 Darunavir Tramadol

Potential for increased risk of tramadol adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Clinical monitoring is recommended. Dose reduction may be needed

6608 Darunavir EVG/c 993 Darunavir 800 mg darunavir once daily

Cmin decreased 21%

Elvitegravir / Cobicistat / Emtricitabine / Tenofovir alafenamide 150 / 150 mg once daily

Elvitegravir AUC decrease 20%, Cmin decrease 52%; Cobicistat AUC decrease 15-20%

Potential for decreased or increased elvitegravir, cobicistat, and / or darunavir effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Use alternative agents. One study supports clinical use of elvitegravir / cobicistat with darunavir 800 mg daily in treatment experienced patients.

6624 Darunavir Estazolam 1009 Darunavir Estazolam

Potential for increased risk of estazolam adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, initiate estazolam at low dose and titrate to effect

6640 Darunavir Diltiazem 1025 Darunavir Diltiazem

Potential for increased risk of diltiazem adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, titrate to effect and monitor diltiazem adverse effects

6481 Darunavir Buprenorphine / naloxone 866 Darunavir 600 mg with 100 mg ritonavir BID

Not studied

Buprenorphine / naloxone 8-16 / 2-4 mg

Norbuprenorphine: Cmax increase 36%, AUC increase 46%, Cmin increase 71%

Potential for increased buprenorphine / naloxone effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of buprenorphine / naloxone

If initiating buprenorphine / naloxone in patients taking DRV / r or DRV / c, carefully titrate dose to desired effect

6497 Darunavir Digoxin 882 Darunavir 600 mg with 100 mg ritonavir BID

Not reported

Digoxin 0.4 mg x 1

Cmax increase 15%, AUC increase 36%

Increased risk of digoxin adverse effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of digoxin

Initiate lowest dose digoxin and titrate to desired clinical effect

6513 Darunavir Sertraline 898 Darunavir 400 mg with 100 mg ritonavir BID

No significant change

Sertraline 50 mg once daily

Cmax decrease 44%, AUC decrease 49%, Cmin decrease 49%

Potential decreased sertraline effects

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of sertraline

Titrate sertraline to effect; monitor to ensure continued response if darunavir / ritonavir initiated

6529 Darunavir Ranitidine 914 Darunavir 400 mg with 100 mg ritonavir BID

No significant change

Ranitidine 150 mg BID

Not reported

Green: Administer standard doses Administer standard doses
6545 Darunavir Flibanserin 930 Darunavir Flibanserin

Potential for increased risk of flibanserin adverse effects

Red: Avoid combination Do not coadminister: Potential for increased flibanserin levels

Contraindicated. Use alternative agents.

6561 Darunavir Lurasidone 946 Darunavir Lurasidone

Potential for increased risk of lurasidone adverse effects

Red: Avoid combination Do not coadminister: Potential for increased lurasidone levels

Contraindicated. Use alternative agents.

6577 Darunavir Phenytoin 962 Darunavir Phenytoin

Potential loss of antiviral efficacy, Potential for decreased phenytoin effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Avoid combination and use alternative agents. If coadministering, monitor and adjust phenytoin levels as indicated and monitor viral load.

Gabapentin, Lamotrigine, Tiagabine, Topiramate
6593 Darunavir Eslicarbazepine 978 Darunavir Eslicarbazepine

Potential loss of antiviral efficacy

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Consider alternate anticonvulsants. If coadministering, use caution and clinical monitoring is recommended

6609 Darunavir Clonazepam 994 Darunavir Clonazepam

Potential for increased risk of clonazepam adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Clinical monitoring is recommended

6625 Darunavir Imipramine 1010 Darunavir Imipramine

Potential for increased risk of imipramine adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, initiate imipramine at low dose. Monitor for CNS and cardiovascular effects.

6641 Darunavir Carvedilol 1026 Darunavir Carvedilol

Potential for increased risk of carvedilol adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, use caution and clinical monitoring is recommended

6482 Darunavir Canagliflozin 867 Darunavir Canagliflozin

Potential for decreased glucose lowering effect

Yellow: Adjust dosing Adjust dosing to avoid decreased levels of canagliflozin

If a patient is already tolerating canagliflozin 100 mg daily, increase canagliflozin dose to 200 mg daily. If a patient is already tolerating canagliflozin 200 mg daily and requires additional glycemic control, management strategy is based on renal function, 300 mg if eGFR>60 or add another agent if eGFR<60

6498 Darunavir MVC 883 Darunavir 600 mg with 100 mg ritonavir BID

Not reported

Maraviroc 150 mg BID

Cmax increase 129%, AUC increase 305%, Cmin increase 700%

Potential for increased maraviroc adverse effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of maraviroc

Use maraviroc 150 mg BID when combined with darunavir / ritonavir

6514 Darunavir Warfarin 899 Darunavir 600 mg with 100 mg ritonavir BID

Not reported

Warfarin 10 mg x 1

S-warfarin Cmax decrease 8%, AUC decrease 21%

Decreased warfarin effects (e.g. decreased INR, increased risk of clotting)

Yellow: Adjust dosing Adjust dosing to avoid reduced levels of warfarin

If coadministering, monitor INR and adjust warfarin as indicated. Monitor for signs and symptons of bleeding.

6530 Darunavir Omeprazole 915 Darunavir 400 mg with 100 mg ritonavir BID

No significant change

Omeprazole 20 mg once daily

Not reported

Green: Administer standard doses Administer standard doses
6546 Darunavir G/P 931 Darunavir Glecaprevir / Pibrentasvir

Potential for increased glecaprevir / pibrentasvir adverse effects

Red: Avoid combination Do not coadminister: Potential for increased glecaprevir / pibrentasvir levels

Use alternative agents

6562 Darunavir Mexiletine 947 Darunavir Mexiletine

Potential for increased risk of mexiletine adverse effects

Red: Avoid combination Do not coadminister: Potential for increased mexiletine levels

Use alternative agents

6578 Darunavir Dabigatran 963 Darunavir Dabigatran

Potential for increased bleeding risk

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Avoid combination and use alternative anticoagulant

6594 Darunavir Oxcarbazepine 979 Darunavir Oxcarbazepine

Potential loss of antiviral efficacy

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Consider alternate anticonvulsants. If coadministering, use caution and clinical monitoring is recommended

6610 Darunavir Drospirenone / Ethinyl estradiol 995 Darunavir Drospirenone / Ethinyl estradiol

Potential for increased risk of drospirenone adverse effects (hyperkalemia) or decreased contraceptive efficacy

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Clinical monitoring is recommended

6626 Darunavir CsA 1011 Darunavir

Not studied

Cyclosporine

Not studied (may increase cyclosporine levels)

Potential for increased risk of cyclosporine adverse effects (supratherapeutic immunosuppression, renal toxicity)

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, initiate lower dose of immunosuppressant, monitor concentrations and toxicity, consult with specialist, and adjust dose as necessary

6642 Darunavir Metoprolol 1027 Darunavir Metoprolol

Potential for increased risk of metoprolol adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, use caution and clinical monitoring is recommended

6483 Darunavir Lamotrigine 868 Darunavir Lamotrigine

Potential for decreased anticonvulsant effects

Yellow: Adjust dosing Adjust dosing to avoid decreased levels of lamotrigine

Monitor anticonvulsant level and adjust accordingly

6499 Darunavir MVC 884 Darunavir 600 mg with 100 mg ritonavir BID with etravirine 200 mg BID

Not reported

Maraviroc 150 mg BID

Cmax increase 77%, AUC increase 210%, Cmin increase 427%

Potential for increased maraviroc adverse effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of maraviroc

Use maraviroc 150 mg BID when combined with darunavir / ritonavir

6515 Darunavir Dabigatran 900 Darunavir Dabigatran Green: Administer standard doses Administer standard doses

No dose adjustment if CrCL < 50 ml / min. Avoid concomitant use if CrCl > 50ml / min.

6531 Darunavir SOF/VEL 916 Darunavir 800 mg with 100 mg ritonavir once daily

Cmax decrease 10%, AUC decrease 8%, Cmin decrease 13%.

Sofosbuvir / Velpatasvir 400 / 100 mg

Sofosbuvir Cmax decrease 38%, AUC decrease 28%; Velpatasvir Cmax decrease 24%, AUC decrease 16%.

Green: Administer standard doses Administer standard doses
6547 Darunavir Irinotecan 932 Darunavir Irinotecan

Potential for increased risk of irinotecan adverse effects

Red: Avoid combination Do not coadminister: Potential for increased irinotecan levels

Discontinue DRV / c at least 1wk prior to starting irinotecan. Do not coadminister unless there are no therapeutic alternatives

6563 Darunavir Naloxegol 948 Darunavir Naloxegol

Potential for increased risk of precipitating opioid withdrawal

Red: Avoid combination Do not coadminister: Potential for increased naloxegol levels

Contraindicated. Use alternative agents.

6579 Darunavir Ticagrelor 964 Darunavir Ticagrelor

Potential for increased bleeding risk

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Avoid combination and use alternative antiplatelet agent

6595 Darunavir Vinblastine 980 Darunavir Vinblastine

Potential for increased risk of vinblastine adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Consider temporarily withholding cobicistat-containing ARV regimen in patients who develop significant hematologic or gastrointestinal adverse effects. If ARV regimen must be withheld for a prolonged period of time, initate a revised regimen

6611 Darunavir Isavuconazole 996 Darunavir Isavuconazole

Potential for increased risk of darunavir and isavuconazole adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Dose adjustment not established, monitor for increased DRV and / or antifungal adverse reactions

6627 Darunavir Nortiptyline 1012 Darunavir Nortiptyline

Potential for increased risk of nortriptyline adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, initiate nortriptyline at low dose. Monitor for CNS and cardiovascular effects.

6643 Darunavir Timolol 1028 Darunavir Timolol

Potential for increased risk of timolol adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, use caution and clinical monitoring is recommended

6484 Darunavir Omeprazole 869 Darunavir 600 mg with 100 mg ritonavir BID

No significant change

Omeprazole 40 mg x 1

Cmax decrease 34%, AUC decrease 42%

Potential decreased omeprazole efficacy

Yellow: Adjust dosing Adjust dosing to avoid decreased levels of omeprazole

Consider using alternative agents. If coadministering, monitor for omeprazole efficacy. If no symptomatic relief, increase dose to no more than 40 mg once daily

6500 Darunavir Pravastatin 885 Darunavir 600 mg with 100 mg ritonavir BID

Not studied

Pravastatin 40 mg x 1

Cmax increase 63%, AUC increase 81%

Increased risk of pravastatin adverse effects (e.g. myopathy, rhabdomyolysis)

Yellow: Adjust dosing Adjust dosing to avoid increased levels of pravastatin

Use lowest possible starting dose, monitor for toxicity and titrate.

6516 Darunavir Edoxaban 901 Darunavir Edoxaban Green: Administer standard doses Administer standard doses

No dose adjustment if CrCL < 50 ml / min. Avoid concomitant use if CrCl > 50ml / min.

6532 Darunavir ETR 917 Darunavir 600 mg with 100 mg ritonavir BID Etravirine 200 mg twice daily Green: Administer standard doses Administer standard doses
6548 Darunavir Ivabradine 933 Darunavir Ivabradine

Potential for increased risk of ivabradine adverse effects (e.g. prolonged QT, cardiac arrythmias)

Red: Avoid combination Do not coadminister: Potential for increased ivabradine levels

Use alternative agents

6564 Darunavir Perphenazine 949 Darunavir Perphenazine

Potential for increased risk of perphenazine adverse effects

Red: Avoid combination Do not coadminister: Potential for increased perphenazine levels

Contraindicated. Use alternative agents.

6580 Darunavir Vorapaxar 965 Darunavir Vorapaxar

Potential for increased bleeding risk

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Avoid combination and use alternative antiplatelet agent

6596 Darunavir Vincristine 981 Darunavir Vincristine

Potential for increased risk of vincristine adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Consider temporarily withholding cobicistat-containing ARV regimen in patients who develop significant hematologic or gastrointestinal adverse effects. If ARV regimen must be withheld for a prolonged period of time, initate a revised regimen

6612 Darunavir Posaconazole 997 Darunavir Posaconazole

Potential for increased risk of darunavir and posaconazole adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Dose adjustment not established, monitor for increased DRV and / or antifungal adverse reactions

6628 Darunavir Trazodone 1013 Darunavir Trazodone

Potential for increased risk of trazodone adverse effects (e.g. nausea, dizziness, hypotension, syncope)

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, initiate trazodone at low dose. Monitor for CNS and cardiovascular effects.

6644 Darunavir CBZ 1029 Darunavir 600 mg with 100 mg ritonaivr BID

Darunavir: No significant change; Ritonavir cmax decreased 44%, AUC decreased 49%, Cmin decreased 56%

Carbamazepine 200 mg BID

Cmax increase 43%, AUC increase 45%, Cmin increase 54%

Increased carbamazepine effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Monitor anticonvulsant level and adjust accordingly. Consider carbamazepine dose reduction by 25-50%. Monitor antiviral efficacy

6485 Darunavir Valproic Acid 870 Darunavir Valproic Acid

Potential for decreased anticonvulsant effects

Yellow: Adjust dosing Adjust dosing to avoid decreased levels of valproic acid

Monitor anticonvulsant level and adjust accordingly

6501 Darunavir RFB 886 Darunavir 600 mg with 100 mg ritonavir BID

Darunavir Cmax increase 42%, AUC increase 57%, Cmin increase 75%; Ritonavir Cmax increase 68%, AUC increase 66%, Cmin increase 31%

Rifabutin 150 mg every other day

Rifabutin: Cmax decrease 28%, AUC decrease 7%, Cmin increase 64%; 25-O-desacetylrifabutin: Cmax increase 377%, AUC increase 881%, Cmin increase 2610%

Increased darunavir and rifabutin effects. Note that lower rifabutin exposure has been reported in HIV- infected patients as compared to healthy study participants.

Yellow: Adjust dosing Adjust dosing to avoid increased levels of rifabutin

Dose reduction of RFB by 75% of usual dose is recommended, such as rifabutin 150 mg every other day. Monitor for antimycobacterial activity and adverse events. Consider therapeutic drug monitoring.

6517 Darunavir Daclatasvir 902 Darunavir 600 mg with 100 mg ritonavir BID

No significant change

Daclatasvir 30 mg once daily

No significant change

Green: Administer standard doses Administer standard doses

No dose adjustment necessary

6533 Darunavir Z-Pak 918 Darunavir Azithromycin Green: Administer standard doses Administer standard doses
6549 Darunavir Alfuzosin 934 Darunavir Alfuzosin

Potential for increased risk of alfuzosin adverse effects (e.g. hypotension)

Red: Avoid combination Do not coadminister: Potential for increased levels of alfuzosin

Contraindicated. Use alternative agents.

6565 Darunavir Suvorexant 950 Darunavir Suvorexant

Potential for increased risk of suvorexant adverse effects

Red: Avoid combination Do not coadminister: Potential for increased suvorexant levels

Use alternative agents

6581 Darunavir Apixaban 966 Darunavir Apixaban

Potential for increased bleeding risk

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Avoid combination; use alternative anticoagulant

Dabigatran, betrixaban, edoxaban
6597 Darunavir Quetiapine 982 Darunavir Quetiapine

Potential for increased risk of quetiapine adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: risks likely to outweigh benefits

Consider using alternative agents. If coadministering, reduce quetiapine dose to 1 / 6 of current dose and monitor for quetiapine adverse reactions

6613 Darunavir Itraconazole 998 Darunavir Itraconazole

Potential for increased darunavir and itraconazole effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Dose adjustment not established; if co-administration needed, itraconazole dose should not exceed 200 mg daily

6629 Darunavir Zolpidem 1014 Darunavir Zolpidem

Potential for increased risk of zolpidem adverse effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

If coadministering, initiate zolpidem at low dose and titrate to effect

6645 Darunavir Dextromethrophan 1030 Darunavir 600 mg with 100 mg ritonavir BID

Not reported

Dextromethrophan 30 mg x 1

Cmax increase 127%, AUC increase 170%

Potential for increased dextromethorphan effects

Orange: Minimal data to guide interaction Minimal data to guide interaction: weigh risks and benefits of using this combination

Monitor for dextromethorphan adverse effects

6486 Darunavir Atorvastatin 871 Darunavir 300 mg with 100 mg ritonavir BID

Not reported

Atorvastatin 40 mg once daily on days 1-4, then 10 mg once daily on days 4-7

Cmax decrease 44%, AUC decrease 15%, Cmin increase 81% (10 mg daily with darunavir / ritonavir compared to atorvastatin 40 mg daily alone)

Increased risk of atorvastatin adverse effects (e.g. myopathy, rhabdomyolysis)

Yellow: Adjust dosing Adjust dosing to avoid increased levels of atorvastatin

Consider using alternative agents. If coadministering, consider low dose atorvastatin and doses < 20 mg. Monitor for myopathy

6502 Darunavir Risperidone 887 Darunavir Risperidone

Potential for increased risk of risperidone adverse effects

Yellow: Adjust dosing Adjust dosing to avoid increased levels of risperidone

If coadministering, dose reduction may be necessary