Interactions
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6281 | Abacavir Methadone 666 | Abacavir | 600 mg BID | No significant change |
Methadone | 40 mg once daily; 90 mg once daily | Methadone clearance increased 22% |
Potential for decreased 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 |
Buprenorphine and naloxone | ||
| 6282 | Abacavir MMF, MPA 667 | Abacavir | 300 mg BID | No significant change |
Mycophenolate | 500 mg BID x 16 weeks | Green: Administer standard doses | Administer standard doses | ||||||
| 6283 | Abacavir Ethanol 668 | Abacavir | 600 mg once daily | Abacavir AUC increased 41%; half-life: increased 26%; Cmax increased 15%; T1 / 2 increased |
Ethanol | 0.7 g / kg body weight | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6284 | Abacavir 3TC 669 | Abacavir | 600 mg x 1 dose | No significant change |
Lamivudine | 150 mg x 1 dose | Lamivudine Cmax decreased 35%; AUC decreased 15% |
Green: Administer standard doses | Administer standard doses | |||||
| 6285 | Abacavir AZT, ZDV 670 | Abacavir | 600 mg x 1 dose | No significant change |
Zidovudine | 300 mg x 1 dose | Zidovudine Cmax decreased 20%; AUC no significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6286 | Abacavir AZT, ZDV 671 | Abacavir | 200 mg TID, 400 mg TID, 600 mg TID, 300 mg BID | Inconsistent effect across all dosing regimens; No effect on AUC with clinical abacavir dose of 300mg BID |
Zidovudine | 200 mg TID, 300 mg BID | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6291 | Emtricitabine AZT, ZDV 676 | Emtricitabine | 200 mg daily x 7 days | No significant change |
Zidovudine | 300 mg once daily x 7 days | Cmax increased 17%, AUC increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6292 | Emtricitabine AZT, ZDV 677 | Emtricitabine | 200 mg daily x 7 days | No significant change |
Zidovudine | 300 mg once daily x 7 days | Cmax increased 17%, AUC increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6293 | Emtricitabine AZT, ZDV 678 | Emtricitabine | 200 mg daily x 7 days | No significant change |
Zidovudine | 300 mg once daily x 7 days | Cmax increased 17%, AUC increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6294 | Emtricitabine AZT, ZDV 679 | Emtricitabine | 200 mg daily x 7 days | No significant change |
Zidovudine | 300 mg once daily x 7 days | Cmax increased 17%, AUC increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6295 | Emtricitabine AZT, ZDV 680 | Emtricitabine | 200 mg daily x 7 days | No significant change |
Zidovudine | 300 mg once daily x 7 days | Cmax increased 17%, AUC increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6296 | Emtricitabine AZT, ZDV 681 | Emtricitabine | 200 mg daily x 7 days | No significant change |
Zidovudine | 300 mg once daily x 7 days | Cmax increased 17%, AUC increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6297 | Emtricitabine AZT, ZDV 682 | Emtricitabine | 200 mg daily x 7 days | No significant change |
Zidovudine | 300 mg once daily x 7 days | Cmax increased 17%, AUC increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6298 | Emtricitabine AZT, ZDV 683 | Emtricitabine | 200 mg daily x 7 days | No significant change |
Zidovudine | 300 mg once daily x 7 days | Cmax increased 17%, AUC increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6299 | Emtricitabine TDF 684 | Emtricitabine | 200 mg daily x 7 days | Cmin increase 20% |
Tenofovir Disoproxil Fumarate | 300 mg once daily x 7 days | no significant |
Green: Administer standard doses | Administer standard doses | |||||
| 6300 | Emtricitabine TDF 685 | Emtricitabine | 200 mg daily x 7 days | Cmin increase 20% |
Tenofovir Disoproxil Fumarate | 300 mg once daily x 7 days | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6301 | Emtricitabine TDF 686 | Emtricitabine | 200 mg daily x 7 days | Cmin increase 20% |
Tenofovir Disoproxil Fumarate | 300 mg once daily x 7 days | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6302 | Emtricitabine TDF 687 | Emtricitabine | 200 mg daily x 7 days | Cmin increase 20% |
Tenofovir Disoproxil Fumarate | 300 mg once daily x 7 days | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6287 | Emtricitabine TDF 672 | Emtricitabine | 200 mg daily x 7 days | Cmin increase 20% |
Tenofovir Disoproxil Fumarate | 300 mg once daily x 7 days | AUC increased 13%, Cmax increased 17% |
Green: Administer standard doses | Administer standard doses | |||||
| 6303 | Emtricitabine TDF 688 | Emtricitabine | 200 mg daily x 7 days | Cmin increase 20% |
Tenofovir Disoproxil Fumarate | 300 mg once daily x 7 days | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6288 | Emtricitabine Famciclovir 673 | Emtricitabine | 200 mg x 1 dose | Cmax decreased 10%; AUC decreased 7% |
Famciclovir | 500 mg x 1 dose | Cmax decreased 7%; AUC decreased 9% |
Green: Administer standard doses | Administer standard doses | |||||
| 6304 | Emtricitabine TDF 689 | Emtricitabine | 200 mg daily x 7 days | Cmin increase 20% |
Tenofovir Disoproxil Fumarate | 300 mg once daily x 7 days | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6289 | Emtricitabine AZT, ZDV 674 | Emtricitabine | 200 mg daily x 7 days | No significant change |
Zidovudine | 300 mg once daily x 7 days | Cmax increased 17%, AUC increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6305 | Emtricitabine Famciclovir 690 | Emtricitabine | 201 mg x 1 dose | no significant change |
Famciclovir | 500 mg x 1 dose | no significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6290 | Emtricitabine AZT, ZDV 675 | Emtricitabine | 200 mg daily x 7 days | No significant change |
Zidovudine | 300 mg once daily x 7 days | Cmax increased 17%, AUC increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6306 | Emtricitabine Famciclovir 691 | Emtricitabine | 202 mg x 1 dose | no significant change |
Famciclovir | 500 mg x 1 dose | no significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6307 | Lamivudine TMP/SMX 692 | Lamivudine | 300 mg daily x 1 dose | Lamivudine AUC increased 44% |
Trimethoprim / Sulfamethoxazole | 160 mg / 800 mg daily x 5 days | Not studied |
Potentially increased lamivudine adverse effects |
Green: Administer standard doses | Administer standard doses | ||||
| 6308 | Lamivudine G/P 693 | Lamivudine | 300 mg daily | No significant change |
Glecaprevir / Pibrentasvir | 300 mg / 120 mg daily | GLE AUC decrease 25%, PIB AUC decrease 28% |
Green: Administer standard doses | Administer standard doses | |||||
| 6309 | Lamivudine Adefovir 694 | Lamivudine | Not studied |
Adefovir | 10 mg daily | No significant change |
Green: Administer standard doses | Administer standard doses | ||||||
| 6310 | Lamivudine Interferon alfa 695 | Lamivudine | 100 mg daily | No significant change |
Interferon alfa | 10 MU three times weekly | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6311 | Lamivudine Buprenorphine / naloxone 696 | Lamivudine | 300 mg daily | Buprenorphine / naloxone | 14 mg daily | No significant change |
Green: Administer standard doses | Administer standard doses | ||||||
| 6312 | Lamivudine Entecavir 697 | Lamivudine | No significant change |
Entecavir | No significant change |
Green: Administer standard doses | Administer standard doses | |||||||
| 6313 | Lamivudine Methadone 698 | Lamivudine | 150 mg lamivudine / 300 mg zidovudine (combination tablet) | Not studied |
Methadone | No significant change |
Green: Administer standard doses | Administer standard doses | ||||||
| 6314 | Lamivudine ATV 699 | Lamivudine | 150 mg BID with zidovudine 300 mg BID x 6 days | No significant change |
Atazanavir | 400 mg daily x 6 days | Not studied |
Green: Administer standard doses | Administer standard doses | |||||
| 6315 | Lamivudine Ribavirin 700 | Lamivudine | 150 mg BID | No significant change |
Ribavirin | 800 mg daily | Green: Administer standard doses | Administer standard doses | ||||||
| 6316 | Lamivudine Sorbitol 701 | Lamivudine | 300 mg daily | AUC decreased 20-44% |
Sorbitol | 3.2 - 13.4 grams daily | Not studied |
Potentially decreased lamivudine efficacy |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: risks likely to outweigh benefits | Consider using alternative agents. Interaction studied with liquid formulation. If unable to avoid co-administration, monitor for virologic efficacy. |
|||
| 6323 | Tenofovir alafenamide LDV/SOF 708 | Tenofovir Alafenamide | 25 mg once daily | Cmax increased 3 - 17%, AUC increased 27-32% |
Ledipasvir / Sofosbuvir | 90 / 400 mg once daily | Ledipasvir: Cmax increased 1%, AUC increased 2%, Cmin increased 2%; sofosbuvir: Cmax decreased 4%, AUC increased 5%; sofosbuvir metabolite: Cmax 8%, AUC increased 8%, Cmin increased 10% |
Green: Administer standard doses | Administer standard doses | |||||
| 6339 | Tenofovir alafenamide St. John's Wort (Hypericum perforatum) 724 | Tenofovir Alafenamide | Not studied |
St. John's Wort | Not studied |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of TAF | Contraindicated. Use alternative agents. |
|||||
| 6324 | Tenofovir alafenamide Midazolam 709 | Tenofovir Alafenamide | 25 mg once daily | Not studied |
Midazolam | 2.5mg once daily (PO); 1mg once daily (IV) | midazolam (2.5mg PO): Cmax increased 2%, AUC increased 12%; midazolam (1mg IV): Cmax decreased 1%, AUC increased 8% |
Green: Administer standard doses | Administer standard doses | |||||
| 6340 | Tenofovir alafenamide CBZ 725 | Tenofovir Alafenamide | 25 mg once daily | Cmax decreased 57%, AUC decreased 55% |
Carbamazepine | 300 mg BID | Not reported |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Reduced levels of TAF | Contraindicated. Use alternative agents. |
|||
| 6325 | Tenofovir alafenamide EE/NGM 710 | Tenofovir Alafenamide | 25 mg once daily | Not studied |
Ethinyl estradiol / Norgestimate | NGM 0.180 / 0.215 / 0.250mg once daily with EE 0.025mg once daily | Norgestromin: Cmax increased 17%, AUC increased 12%, Cmin increased 16%; norgestrel: Cmax increased 10%, AUC increased 9%, Cmin increased 11%; EE: Cmax increased 22%, AUC increased 11%, Cmin increased 2% |
Green: Administer standard doses | Administer standard doses | |||||
| 6326 | Tenofovir alafenamide LDV/SOF 711 | Tenofovir Alafenamide | 10 mg once daily | Cmax decreased 10%; AUC decreased 14% |
Ledipasvir / Sofosbuvir | 90 / 400 mg once daily | Not reported |
Green: Administer standard doses | Administer standard doses | |||||
| 6327 | Tenofovir alafenamide EFV 712 | Tenofovir Alafenamide | TAF 40 mg once daily | Cmin decreased 22%, AUC decreased 14% |
Efavirenz | 600 mg once daily | Not studied |
Green: Administer standard doses | Administer standard doses | |||||
| 6328 | Tenofovir alafenamide SOF/VEL/VOX 713 | Tenofovir Alafenamide | 25 mg once daily | Cmax increased 28%, AUC increased 57% |
Sofosbuvir / Velpatasvir / Voxilaprevir | 400 / 100 / 100 + 100 once daily | Sofosbuvir Cmax increased 14%, AUC increased 9%. Velpatasvir Cmax decreased 4%, AUC decreased 4%, Cmin decreased 6%. Voxilaprevir Cmax decreased 10%, AUC decreased 9%, Cmin decreased 3% |
Green: Administer standard doses | Administer standard doses | |||||
| 6329 | Tenofovir alafenamide SOF/VEL/VOX 714 | Tenofovir Alafenamide | 10 mg once daily | Cmax decreased 21%; AUC decreased 7% |
Sofosbuvir / Velpatasvir / Voxilaprevir | 400 / 100 / 100mg + 100mg voxilaprevir once daily | Sofosbuvir Cmax increased 14%, AUC increased 9%. Velpatasvir Cmax decreased 4%, AUC decreased 4%, Cmin decreased 6%. Voxilaprevir Cmax decreased 10%, AUC decreased 9%, Cmin decreased 3% |
Green: Administer standard doses | Administer standard doses | |||||
| 6330 | Tenofovir alafenamide SOF/VEL 715 | Tenofovir Alafenamide | 10 mg once daily | Cmax decreased 20%, AUC decreased 13% |
Sofosbuvir / Velpatasvir | 400 / 100mg once daily | Sofosbuvir: Cmax increased 23%, AUC increased 37%; Sofosbuvir metabolite: Cmax increased 29%, AUC increased 48%, Cmin increased 58%; velpatasvir: Cmax increased 30%, AUC increased 50%, Cmin increased 60% |
Green: Administer standard doses | Administer standard doses | |||||
| 6331 | Tenofovir alafenamide Adefovir 716 | Tenofovir Alafenamide | Not studied |
Adefovir | Not studied |
Potential for increased renal adverse effects |
Red: Avoid combination | Do not coadminister: Potential for increased levels of TAF | Contraindicated. Use alternative agents. |
|||||
| 6332 | Tenofovir alafenamide RFB 717 | Tenofovir Alafenamide | Not studied |
Rifabutin | Not studied |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of TAF | Contraindicated. Use alternative agents. |
|||||
| 6317 | Tenofovir alafenamide DRV/r 702 | Tenofovir Alafenamide | 10 mg once daily | Cmax increased 42%, AUC increased 6% |
Darunavir | 800 / 100 mg once daily | Cmax decreased 1%, AUC increased 1%, Cmin increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6333 | Tenofovir alafenamide RIF 718 | Tenofovir Alafenamide | Dosed once: AUC decreased 55%; dosed twice: AUC decreased 14% |
Rifampin | Not studied |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of TAF | Contraindicated. Use alternative agents. |
|||||
| 6318 | Tenofovir alafenamide ATV 703 | Tenofovir Alafenamide | 10 mg once daily | Cmax increased 77%, AUC increased 91% |
Atazanavir | 300 mg + 100mg ritonavir once daily | Cmax decreased 2%, AUC decreased 1% |
Green: Administer standard doses | Administer standard doses | |||||
| 6334 | Tenofovir alafenamide Oxcarbazepine 719 | Tenofovir Alafenamide | Not studied |
Oxcarbazepine | Not studied |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of TAF | Contraindicated. Use alternative agents. |
|||||
| 6319 | Tenofovir alafenamide RPV 704 | Tenofovir Alafenamide | 25 mg once daily | Cmax increased 1%, AUC increased 1% |
Rilpivirine | 25 mg once daily | Cmax decreased 7%, AUC increased 1%, Cmin increased 13% |
Green: Administer standard doses | Administer standard doses | |||||
| 6335 | Tenofovir alafenamide Phenobarbital 720 | Tenofovir Alafenamide | Not studied |
Phenobarbital | Not studied |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of TAF | Contraindicated. Use alternative agents. |
|||||
| 6320 | Tenofovir alafenamide Sertraline 705 | Tenofovir Alafenamide | 10 mg once daily | AUC decreased 4% |
Sertraline | 50 mg once daily | Cmax increased 14%, AUC increased 9% |
Green: Administer standard doses | Administer standard doses | |||||
| 6336 | Tenofovir alafenamide Phenytoin 721 | Tenofovir Alafenamide | Not studied |
Phenytoin | Not studied |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of TAF | Contraindicated. Use alternative agents. |
|||||
| 6321 | Tenofovir alafenamide DTG 706 | Tenofovir Alafenamide | 10 mg once daily | Cmax increased 24%, AUC increased 19% |
Dolutegravir | 50 mg once daily | Cmax increased 15%, AUC increased 2%, Cmin increased 5% |
Green: Administer standard doses | Administer standard doses | |||||
| 6337 | Tenofovir alafenamide Primidone 722 | Tenofovir Alafenamide | Not studied |
Primidone | Not studied |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of TAF | Contraindicated. Use alternative agents. |
|||||
| 6322 | Tenofovir alafenamide DRV/c 707 | Tenofovir Alafenamide | 25 / 200 mg once daily | Cmax decreased 7%, AUC decreased 2% |
Darunavir | 800 / 150 mg once daily | Cmax increased 2%, AUC decreased 1%, Cmin decreased 3% |
Green: Administer standard doses | Administer standard doses | |||||
| 6338 | Tenofovir alafenamide RPT 723 | Tenofovir Alafenamide | Not studied |
Rifapentine | Not studied |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of TAF | Contraindicated. Use alternative agents. |
|||||
| 6355 | Tenofovir disoproxil fumarate ABC 740 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Abacavir | 300 mg x 1 | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6356 | Tenofovir disoproxil fumarate Methadone 741 | Tenofovir Disoproxil Fumarate | 300 mg once daily | Not studied |
Methadone | 40-110 mg once daily (individual patients on stable dose) | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6341 | Tenofovir disoproxil fumarate ATV 726 | Tenofovir Disoproxil Fumarate | 300 mg once daily | Cmax increase 39%, AUC increase 55%, Cmin increase 70% |
Atazanavir | 400 mg once daily with 100 mg ritonavir daily | Cmax increase 31%, AUC increase 38%, Cmin increase 33% |
Increased atazanavir and tenofovir effects |
Yellow: Adjust dosing | Adjust dosing to avoid altered levels of atazanavir and TDF | Do not coadminister with unboosted atazanavir (400 mg). Administer 300 mg atazanavir with 100 mg ritonavir when used as part of a tenofovir containing regimen. If coadministering atazanavir, ritonavir, tenofovir, and an H2 receptor antagonist in a treatment-experienced patient, increase atazanavir dose to 400 mg (plus 100 mg ritonavir). |
|||
| 6357 | Tenofovir disoproxil fumarate DTG 742 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Dolutegravir | 50 mg once daily | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6342 | Tenofovir disoproxil fumarate ATV 727 | Tenofovir Disoproxil Fumarate | 300 mg once daily with a light meal | Cmax increase 14%, AUC increase 24%, Cmin increase 22% |
Atazanavir | 400 mg once daily with a light meal | Cmax decrease 21%, AUC decrease 25%, Cmin decrease 40% |
Increased tenofovir effects, decreased atazanavir effects |
Yellow: Adjust dosing | Adjust dosing to avoid altered levels of atazanavir and TDF | Do not coadminister with unboosted atazanavir (400 mg). Administer 300 mg atazanavir with 100 mg ritonavir when used as part of a tenofovir containing regimen. If coadministering atazanavir, ritonavir, tenofovir, and an H2 receptor antagonist in a treatment-experienced patient, increase atazanavir dose to 400 mg (plus 100 mg ritonavir). |
|||
| 6358 | Tenofovir disoproxil fumarate Daclatasvir 743 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Daclatasvir | 60 mg once daily | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6343 | Tenofovir disoproxil fumarate ATV 728 | Tenofovir Disoproxil Fumarate | 300 mg once daily, separated 12 hours away from atazanavir / ritonavir | Cmax increase 34%, AUC increase 37%, Cmin increase 29% |
Atazanavir | 300 mg once daily with 100 mg ritonavir daily | Cmax decrease 28%, AUC decrease 25%, Cmin decrease 23% |
Increased tenofovir effects, decreased atazanavir effects |
Yellow: Adjust dosing | Adjust dosing to avoid altered levels of atazanavir and TDF | Do not coadminister with unboosted atazanavir (400 mg). Administer 300 mg atazanavir with 100 mg ritonavir when used as part of a tenofovir containing regimen. If coadministering atazanavir, ritonavir, tenofovir, and an H2 receptor antagonist in a treatment-experienced patient, increase atazanavir dose to 400 mg (plus 100 mg ritonavir). |
|||
| 6359 | Tenofovir disoproxil fumarate EFV 744 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Efavirenz | 600 mg once daily | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6344 | Tenofovir disoproxil fumarate ATV/c 729 | Tenofovir Disoproxil Fumarate | Not studied (may increase TDF levels) |
Atazanavir / Cobicistat | Not studied (may decrease atazanavir levels) |
Potentially increased risk of TDF adverse effects and decreased efficacy of atazanavir |
Yellow: Adjust dosing | Adjust dosing to avoid altered levels of atazanavir and TDF | If coadministering atazanavir, cobicistat, tenofovir, and an H2 receptor antagonist in a treatment-experienced patient, increase atazanavir dose to 400 mg |
|||||
| 6360 | Tenofovir disoproxil fumarate RIF 745 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Rifampin | 600 mg once daily | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6345 | Tenofovir disoproxil fumarate RPV 730 | Tenofovir Disoproxil Fumarate | 300 mg once daily | Cmax increase 19%, AUC increase 23%, Cmin increase 24% |
Rilpivirine | 150 mg once daily | No significant change |
Potentially increased risk of TDF adverse effects |
Green: Administer standard doses | Administer standard doses | Use recommended dose of rilpivirine 25 mg |
|||
| 6361 | Tenofovir disoproxil fumarate Ribavirin 746 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Ribavirin | 800 mg x 1 | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6346 | Tenofovir disoproxil fumarate G/P 731 | Tenofovir Disoproxil Fumarate | Not studied (may increase TDF levels) |
Glecaprevir / Pibrentasvir | Not studied |
(when given with EFV / FTC) |
Green: Administer standard doses | Administer standard doses | ||||||
| 6362 | Tenofovir disoproxil fumarate Adefovir 747 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Adefovir | 10 mg once daily | No significant change |
Potential for increased risk of TDF adverse effects and / or increased concentration of other renally eliminated drugs |
Red: Avoid combination | Do not coadminister: Potential for increased levels of TDF | Avoid combination and use alternative agents |
|||
| 6347 | Tenofovir disoproxil fumarate SOF 732 | Tenofovir Disoproxil Fumarate | 300 mg once daily | Cmax increase 25% |
Sofosbuvir | 400 mg x 1 | Cmax decrease 19% |
Green: Administer standard doses | Administer standard doses | |||||
| 6363 | Tenofovir disoproxil fumarate Ganciclovir 748 | Tenofovir Disoproxil Fumarate | Not studied (may increase TDF levels) |
Ganciclovir | Not studied (may increase ganciclovir levels) |
Potential for increased risk of TDF and / or ganciclovir adverse effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | If coadministering, monitor for adverse effects |
|||||
| 6348 | Tenofovir disoproxil fumarate ETR 733 | Tenofovir Disoproxil Fumarate | 300 mg once daily | Cmax increase 15%, AUC increase 15%, Cmin increase 19% |
Etravirine | 200 mg BID | Cmax decrease 19%, AUC decrease 19%, Cmin decrease 18% |
Green: Administer standard doses | Administer standard doses | |||||
| 6364 | Tenofovir disoproxil fumarate Valganciclovir 749 | Tenofovir Disoproxil Fumarate | Not studied (may increase TDF levels) |
Valganciclovir | Not studied (may increase ganciclovir levels) |
Potential for increased risk of TDF and / or ganciclovir adverse effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | If coadministering, monitor for adverse effects |
|||||
| 6349 | Tenofovir disoproxil fumarate 3TC 734 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Lamivudine | 150 mg BID | Cmax decrease 24% |
Green: Administer standard doses | Administer standard doses | |||||
| 6365 | Tenofovir disoproxil fumarate SOF/VEL 750 | Tenofovir Disoproxil Fumarate | 300 mg once daily | Cmax increased 36%; AUC increased 35%; Cmin increased 45% |
Sofosbuvir / Velpatasvir | 400 / 100mg once daily | Not studied |
Potentially increased risk of TDF adverse effects (e.g. renal function decline) |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | If coadministering, monitor for TDF adverse effects |
|||
| 6350 | Tenofovir disoproxil fumarate RAL 735 | Tenofovir Disoproxil Fumarate | 300 mg once daily | Cmax decrease 23%, AUC decrease 10%, Cmin decrease 13% |
Raltegravir | 400 mg BID | Cmax increase 64%, AUC increase 49% |
Green: Administer standard doses | Administer standard doses | |||||
| 6366 | Tenofovir disoproxil fumarate SOF/VEL/VOX 751 | Tenofovir Disoproxil Fumarate | Increase AUC 30-80% when given with various ARV containing TDF |
Sofosbuvir / Velpatasvir / Voxilaprevir | Not studied |
Potentially increased risk of TDF adverse effects (e.g. renal function decline) |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | If coadministering, monitor for TDF adverse effects |
|||||
| 6351 | Tenofovir disoproxil fumarate Entecavir 736 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Entecavir | 1 mg once daily | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6367 | Tenofovir disoproxil fumarate DRV 752 | Tenofovir Disoproxil Fumarate | 300 mg once daily | Cmax increase 24%, AUC increase 22%, Cmin increase 37% |
Darunavir | 300 mg BID with ritonavir 100 mg BID | Cmax increase 16%, AUC increase 21%, Cmin increase 24% |
Increased risk of TDF and / or darunavir adverse effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | If coadministering, monitor for TDF adverse effects (e.g. renal function decline) |
|||
| 6352 | Tenofovir disoproxil fumarate EE/NGM 737 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Ethinyl estradiol / Norgestimate | 1 tab daily | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6368 | Tenofovir disoproxil fumarate LDV/SOF 753 | Tenofovir Disoproxil Fumarate | 300 mg once daily | AUC increase 40%-98%, Cmin increase 55-80% when TDF coadministered with rilpivirine and efavirenz or various PIs, INSTIs, and NNRTIs |
Ledipasvir / Sofosbuvir | 90 / 400 mg once daily | Not studied |
Increased risk of TDF adverse effects (e.g. renal function decline) |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | If coadministering, monitor for TDF adverse effects. Avoid use if CrCl >60 ml / min. |
|||
| 6353 | Tenofovir disoproxil fumarate Buprenorphine / naloxone 738 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Buprenorphine / naloxone | 14-16 mg once daily | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6354 | Tenofovir disoproxil fumarate FTC 739 | Tenofovir Disoproxil Fumarate | 300 mg once daily | No significant change |
Emtricitabine | 200 mg once daily | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 5971 | Doravirine RFB 356 | Doravirine | 100 mg x 1 | AUC decreased 50%; Cmin decreased 68% |
Rifabutin | 300 mg daily | Not studied |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Reduced levels of doravirine | Contraindicated. Use alternative agents. If discontinuing the rifamycin, at least a 4 week cessation period is recommended prior to beginning doravirine. |
|||
| 5972 | Doravirine RIF 357 | Doravirine | 100 mg x 1 | AUC decreased 88%; Cmax decreased 57%, Cmin decreased 97% |
Rifampin | 600 mg daily | Not studied |
Potential decrease in antiretroviral efficacy. |
Red: Avoid combination | Do not coadminister: Reduced levels of doravirine | Contraindicated. Use alternative agents. If discontinuing the rifamycin, at least a 4 week cessation period is recommended prior to beginning doravirine. |
|||
| 5973 | Doravirine EFV 358 | Doravirine | 100 mg | AUC decreased 32%; Cmax decreased 14%; C24 decreased 50% |
Efavirenz | 600 mg daily x 14 days | Not studied |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Reduced levels of doravirine | Do not coadminister. Use alternative agents. |
|||
| 5974 | Doravirine EFV 359 | Doravirine | 100 mg x 1 | AUC decreased 62%; Cmax decreased 35%; C24 decreased 85% |
Efavirenz | 600 mg x 1 | Not studied |
Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Reduced levels of doravirine | Do not coadminister. Use alternative agents. |
|||
| 5959 | Doravirine Omeprazole 344 | Doravirine | 100 mg x 1 | AUC decreased 17%; Cmin decreased 16% |
Omeprazole | Potential decrease in antiretroviral efficacy. |
Green: Administer standard doses | Administer standard doses | ||||||
| 5960 | Doravirine RTV 345 | Doravirine | 50 mg x 1 | AUC increased to 354%; Cmax increased by 31%; C24 increased to 291% |
Ritonavir | 100 mg BID | Not studied |
Potential for increased doravirine adverse effects |
Green: Administer standard doses | Administer standard doses | No dose adjustment necessary. Monitor for doravirine adverse effects. |
|||
| 5961 | Doravirine Ketoconazole 346 | Doravirine | 100 mg x 1 | AUC increased to 306%; Cmax increased by 25%; C24 increased to 275% |
Ketoconazole | 400 mg daily | Not studied |
Potential for increased doravirine adverse effects |
Green: Administer standard doses | Administer standard doses | No dose adjustment necessary. Monitor for doravirine adverse effects. |
|||
| 5962 | Doravirine Carbamazepine 347 | Doravirine | Carbamazepine | Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of doravirine | Contraindicated. Use alternative agents. If discontinuing carbamazepine, a minimum 4 week cessation period is recommended prior to initiating doravirine. |
|||||||
| 5963 | Doravirine Enzalutamide 348 | Doravirine | Enzalutamide | Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of doravirine | Contraindicated. Use alternative agents. If discontinuing enzalutamide, a minimum 4 week cessation period is recommended prior to initiating doravirine. |
|||||||
| 5964 | Doravirine Mitotane 349 | Doravirine | Mitotane | Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of doravirine | Contraindicated. Use alternative agents. If discontinuing mitotane, a minimum 4 week cessation period is recommended prior to initiating doravirine. |
|||||||
| 5965 | Doravirine Oxcarbazepine 350 | Doravirine | Oxcarbazepine | Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of doravirine | Contraindicated. Use alternative agents. If discontinuing oxcarbazepine, a minimum 4 week cessation period is recommended prior to initiating doravirine. |
|||||||
| 5966 | Doravirine Phenobarbital 351 | Doravirine | Phenobarbital | Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of doravirine | Contraindicated. Use alternative agents. If discontinuing phenobarbital, a minimum 4 week cessation period is recommended prior to initiating doravirine. |
|||||||
| 5967 | Doravirine Phenytoin 352 | Doravirine | Phenytoin | Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of doravirine | Contraindicated. Use alternative agents. If discontinuing phenytoin, a minimum 4 week cessation period is recommended prior to initiating doravirine. |
|||||||
| 5968 | Doravirine St. John's Wort (Hypericum perforatum) 353 | Doravirine | St. John's Wort | Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of doravirine | Contraindicated. Use alternative agents. If discontinuing St. John's Wort, a minimum 4 week cessation period is recommended prior to initiating doravirine. |
|||||||
| 5969 | Doravirine ETR 354 | Doravirine | Etravirine | Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of doravirine | Do not coadminister. Use alternative agents. |
|||||||
| 5970 | Doravirine NVP 355 | Doravirine | Nevirapine | Potential decrease in antiretroviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of doravirine | Do not coadminister. Use alternative agents. |
|||||||
| 5987 | Efavirenz RFB 372 | Efavirenz | 600 mg x 14 days | No significant change |
Rifabutin | 300 mg daily x 14 days | Rifabutin AUC decreased 38%; Cmax decreased 32% |
Decreased rifabutin effects |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of rifabutin | Increase rifabutin to 450-600 mg daily. May use rifabutin 300 mg three times weekly if not coadministered with a protease inhibitor |
|||
| 6003 | Efavirenz Diltiazem 388 | Efavirenz | 600 mg daily x 14 days | No significant change |
Diltiazem | 240 mg daily x 21 days | Diltiazem AUC decreased 69%; Cmax decreased 60%; Cmin decreased 63% |
Decreased diltiazem effects |
Green: Administer standard doses | Administer standard doses | Monitor diltiazem efficacy and to titrate to clinical effect |
|||
| 6019 | Efavirenz Buprenorphine / naloxone 404 | Efavirenz | 600 mg daily x 15 days | No significant change |
Buprenorphine / naloxone | stable dose for at least 2 weeks | Buprenorphine AUC decreased 49%; Cmax decreased 45%, Cmin decreased 50%; half-life: decreased 29% |
Possible decreased buprenorphine effects |
Green: Administer standard doses | Administer standard doses | Monitor for signs and symptoms of opioid withdrawal; some patients may need an increase in the buprenorphine dose, though study patients did not go into opioid withdrawal |
|||
| 6035 | Efavirenz Cetirizine 420 | Efavirenz | 600 mg x 10 days | No significant change |
Cetirizine | 10 mg x 1 dose | Cetirizine Cmax decreased 24% |
Green: Administer standard doses | Administer standard doses | |||||
| 6051 | Efavirenz ATV 436 | Efavirenz | 600 mg daily 2 hours after atazanavir and ritonavir d 7-20 | Atazanavir | 400 mg daily d 1-6, then 300 mg daily days 7_-20 with ritonavir 100 mg daily | Atazanavir auc increased 39%, Cmax increased 48%, Cmin increased 14%. |
Potential loss of antiviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of atazanavir | Use alternative agents |
||||
| 6067 | Efavirenz Lumateperone 452 | Efavirenz | Lumateperone | Decreased Lumateperon levels |
Red: Avoid combination | Do not coadminister: Reduced levels of lumateperon | Avoid combination and use alternative agents |
|||||||
| 6083 | Efavirenz Saquinavir 468 | Efavirenz | 600 mg daily for 10 days | Saquinavir | 1200 mg every 8 hours for 10 days | AUC decreased 62%, Cmin decreased 56%, Cmax decreased %50 |
Potential loss of antiviral efficacy |
Red: Avoid combination | Minimal data to guide interaction, weigh risks and benefits of using this combination | Use alternative agents |
||||
| 6099 | Efavirenz Ticagrelor 484 | Efavirenz | Ticagrelor | Possible decreased ticagrelor levels |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: risks likely to outweigh benefits | Avoid combination and use alternative agents |
|||||||
| 6115 | Efavirenz Warfarin 500 | Efavirenz | Not studied |
Warfarin | Not studied (may increase or decrease warfarin levels) |
Increased or decreased warfarin effects (altered INR, increased risk of bleeding or clotting) |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | If coadministering monitor INR and adjust warfarin as indicated. Monitor for signs and symptons of bleeding. |
|||||
| 5988 | Efavirenz RFB 373 | Efavirenz | 600 mg x 14 days | No significant change |
Rifabutin | 300 mg daily x 14 days | Rifabutin AUC decreased 38%; Cmax decreased 32%; Cmin decreased 45% |
Decreased rifabutin effects |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of rifabutin | Increase rifabutin to 450-600 mg daily. May use rifabutin 300 mg three times weekly if not coadministered with a protease inhibitor |
|||
| 6004 | Efavirenz Diltiazem 389 | Efavirenz | 600 mg daily x 14 days | No significant change |
Diltiazem | 240 mg daily x 21 days | Diltiazem AUC decreased 69%; Cmax decreased 60%; Cmin decreased 63% |
Decreased diltiazem effects |
Green: Administer standard doses | Administer standard doses | Monitor diltiazem efficacy and to titrate to clinical effect |
|||
| 6020 | Efavirenz Atorvastatin 405 | Efavirenz | 600 mg daily x 15 days | No significant change |
Atorvastatin | 10 mg daily x 4 days | Atorvastatin AUC decreased 43%, Cmax decreased %14, cmin decreased 69% Atorvastatin and metabolites AUC decreased 32% |
Decreased lipid effects |
Green: Administer standard doses | Administer standard doses | Monitor for statin efficacy. May need to increase atorvastatin dose |
|||
| 6036 | Efavirenz Lorazepam 421 | Efavirenz | 600 mg x 10 days | Lorazepam | 2 mg x 1 dose | Lorazepam AUC no significant change; Cmax increased 16% |
Green: Administer standard doses | Administer standard doses | ||||||
| 6052 | Efavirenz ATV 437 | Efavirenz | 600 mg daily 2 hours after atazanavir and ritonavir d 7-20 | Atazanavir | 400 mg daily d 1-6, then 300 mg daily days 7_-20 with ritonavir 100 mg daily | Atazanavir auc increased 39%, Cmax increased 48%, Cmin increased 48%. |
Potential loss of antiviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of atazanavir | Use alternative agents |
||||
| 6068 | Efavirenz G/P 453 | Efavirenz | Glecaprevir / Pibrentasvir | decreased pibrenatasvir / glecaprevir effects |
Red: Avoid combination | Do not coadminister: Reduced levels of Pibrenatasvir / Glecaprevir | Contraindicated. Use alternative agents. |
|||||||
| 6084 | Efavirenz Saquinavir 469 | Efavirenz | 600 mg daily for 10 days | Saquinavir | 1200 mg every 8 hours for 10 days | AUC decreased 62%, Cmin decreased 56%, Cmax decreased %50 |
Potential loss of antiviral efficacy |
Red: Avoid combination | Minimal data to guide interaction, weigh risks and benefits of using this combination | Use alternative agents |
||||
| 6100 | Efavirenz Phenytoin 485 | Efavirenz | Not studied (may decrease efavirenz levels) |
Phenytoin | Not studied (may decrease phenytoin levels) |
Decreased efavirenz and 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 phenytoin levels and adjust as indicated |
Gabapentin Lamotrigine Tiagabine Topiramate | ||||
| 6116 | Efavirenz Warfarin 501 | Efavirenz | Not studied |
Warfarin | Not studied (may increase or decrease warfarin levels) |
Increased or decreased warfarin effects (altered INR, increased risk of bleeding or clotting) |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | If coadministering monitor INR and adjust warfarin as indicated. Monitor for signs and symptons of bleeding. |
|||||
| 5989 | Efavirenz RFB 374 | Efavirenz | 600 mg x 14 days | No significant change |
Rifabutin | 300 mg daily x 14 days | Rifabutin AUC decreased 38%; Cmax decreased 32%; Cmin decreased 45% |
Decreased rifabutin effects |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of rifabutin | Increase rifabutin to 450-600 mg daily. May use rifabutin 300 mg three times weekly if not coadministered with a protease inhibitor |
|||
| 6005 | Efavirenz Diltiazem 390 | Efavirenz | 600 mg daily x 15 days | No significant change |
Diltiazem | 240 mg daily x 21 days | Diltiazem AUC decreased 69%; Cmax decreased 60%; Cmin decreased 63% |
Decreased diltiazem effects |
Green: Administer standard doses | Administer standard doses | Monitor diltiazem efficacy and to titrate to clinical effect |
|||
| 6021 | Efavirenz Atorvastatin 406 | Efavirenz | 600 mg daily on days 4-18 | No significant change |
Atorvastatin | 10 mg daily on days 0-3 and 15-18 | Atorvastatin AUC decreased 43%; Atorvastatin and metabolites AUC decreased 34% |
Decreased lipid effects |
Green: Administer standard doses | Administer standard doses | Monitor for statin efficacy. May need to increase atorvastatin dose |
|||
| 6037 | Efavirenz Lorazepam 422 | Efavirenz | 600 mg x 10 days | Lorazepam | 2 mg x 1 dose | Lorazepam AUC no significant change; Cmax increased 16% |
Green: Administer standard doses | Administer standard doses | ||||||
| 6053 | Efavirenz ATV 438 | Efavirenz | 600 mg daily days 11-24 | Atazanavir | 300 mg daily / ritonavir 100 mg daily days 1-10 then 400 mg daily / ritonavir 100 mg daily days 11-24 | Atazanavir Cmin decreased 42%, Cmax increased 17% |
Potential loss of antiviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of atazanavir | Use alternative agents |
||||
| 6069 | Efavirenz Pimavanserin 454 | Efavirenz | Pimavanserin | Decreased pimavanserin levels |
Red: Avoid combination | Do not coadminister: Reduced levels of pimavanserin | Avoid combination and use alternative agents |
|||||||
| 6085 | Efavirenz Artemether / Lumefantrine 470 | Efavirenz | 600 mg daily x 26 days | Artemether / Lumefantrine | artemether 20mg / lumefantrine 120 mg 4 tablets / dose for 6 doses total in 3 days | Aremether AUC decreased 51%, Cmax decreased 21% Lumefantrine AUC decreased 21% |
Potentially compromised antimalarial activity |
Orange: Minimal data to guide interaction | Consider using alternative agents | If coadministering,dose adjustment not established. Monitor for anti-malarial efficacy. |
||||
| 6101 | Efavirenz Phenytoin 486 | Efavirenz | Not studied (may decrease efavirenz levels) |
Phenytoin | Not studied (may decrease phenytoin levels) |
Decreased efavirenz and 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 phenytoin levels and adjust as indicated |
|||||
| 6117 | Efavirenz NVP 502 | Efavirenz | 600 mg daily | Efavirenz AUC decreased 22%; Cmin decreased 36% |
Nevirapine | 200 mg daily x 2 weeks, then 400 mg daily | No significant change |
Decreased efavirenz effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | Monitor and adjust therapy as indicated; may consider increasing efavirenz to 800 mg daily |
|||
| 5990 | Efavirenz RFB 375 | Efavirenz | 600 mg daily | Not studied |
Rifabutin | 300 mg or 450 mg twice weekly | On 300 mg rifabutin twice weekly, rifabutin level 2 hours after dose: no significant change; rifabutin level 6 hours post dose: decreased 27%; on 450 mg twice weekly, rifabutin level 2 hours post dose: no significant change; rifabutin level 6 hours post dose: decreased 58%(all values compared to rifabutin alone) |
Potential decreased rifabutin effects |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of rifabutin | Increase rifabutin to 450-600 mg daily. May use rifabutin 300 mg three times weekly if not coadministered with a protease inhibitor |
|||
| 6006 | Efavirenz Diltiazem 391 | Efavirenz | 600 mg daily x 28 days | EFV AUC increased 11%, Cmax increased %16, Cmin increased 13% |
Diltiazem | 240 mg daily x 14 days | Decreased diltiazem effects |
Green: Administer standard doses | Administer standard doses | Monitor diltiazem efficacy and to titrate to clinical effect |
||||
| 6022 | Efavirenz Atorvastatin 407 | Efavirenz | 600 mg daily x 15 days | No significant change |
Atorvastatin | 10 mg daily x 5 days | Atorvastatin AUC decreased 43%; Cmax decreased 14%, Cmin decreased 69%. Atorvastatin and metabolites AUC decreased 32%, Cmin decreased 48%, Cmax decreased 15% |
Decreased lipid effects |
Green: Administer standard doses | Administer standard doses | Monitor for statin efficacy. May need to increase atorvastatin dose |
|||
| 6038 | Efavirenz NFV 423 | Efavirenz | 600 mg QHS | Nelfinavir | 750 mg TID | Nelfinavir clearance: no significant changeM8 clearance: increased 43% |
Green: Administer standard doses | Administer standard doses | ||||||
| 6054 | Efavirenz ATV 439 | Efavirenz | 600 mg daily days 11-24 | Atazanavir | 300 mg daily / ritonavir 100 mg daily days 1-10 then 400 mg daily / ritonavir 100 mg daily days 11-24 | Atazanavir Cmin decreased 43%, Cmax increased 17% |
Potential loss of antiviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of atazanavir | Use alternative agents |
||||
| 6070 | Efavirenz EE/NGM 455 | Efavirenz | 600 mg QHS | Ethinyl estradiol / Norgestimate | 0.025 mg ethinyl estradiol / 0.25 mg norgestimate | Ethinyl estradiol: no significant change; Norgestromin AUC decreased 64%; Cmax decreased 46%; Cmin decrased 82% |
Decreased effects of ethinyl estradiol and norgestimate |
Red: Avoid combination | Do not coadminister: Reduced levels of progestin | Use alternative contraceptive method |
||||
| 6086 | Efavirenz Artemether / Lumefantrine 471 | Efavirenz | 600 mg daily x 26 days | EFV AUC decreased 17% |
Artemether / Lumefantrine | artemether 20mg / lumefantrine 120 mg 4 tablets / dose for 6 doses total in 3 days | Aremether AUC decreased 51%, Cmax decreased 21% Lumefantrine AUC decreased 21%. |
Potentially compromised antimalarial activity |
Orange: Minimal data to guide interaction | Consider using alternative agents | If coadministering,dose adjustment not established. Monitor for anti-malarial efficacy. |
|||
| 6102 | Efavirenz Phenobarbital 487 | Efavirenz | Not studied (may decrease levels) |
Phenobarbital | Not studied |
Decreased efavirenz 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 phenobarbital levels and adjust as indicated |
Gabapentin Lamotrigine Tiagabine Topiramate | ||||
| 6118 | Efavirenz Midazolam 503 | Efavirenz | Not studied |
Midazolam | Not studied (may increase midazolam levels) |
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 | ||||
| 5975 | Efavirenz Fluvastatin 360 | Efavirenz | Fluvastatin | Potential for increased levels of fluvastatin |
Yellow: Adjust dosing | adjust dosing to avoid increased levels of fluvastatin | ||||||||
| 5991 | Efavirenz RFB 376 | Efavirenz | 600 mg daily | Not studied |
Rifabutin | 600 mg twice weekly | Rifabutin AUC no significant change; Cmax no significant change (when compared to rifabutin 300 mg twice weekly without efavirenz) |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of rifabutin | Increase rifabutin to 450-600 mg daily. May use rifabutin 300 mg three times weekly if not coadministered with a protease inhibitor |
||||
| 6007 | Efavirenz RIF 392 | Efavirenz | 600 mg daily x 14 days | Efavirenz AUC decreased 22%; Cmax decreased 24%; Cmin decreased 25% |
Rifampin | 600 mg daily x 14 days | No significant change |
Decreased efavirenz effects |
Green: Administer standard doses | Administer standard doses | Monitor for antiviral efficacy. May consider increasing efavirenz to 800 mg daily for patient's weighing 50 kg or more when used with rifampin |
Rifabutin | ||
| 6023 | Efavirenz Linagliptin 408 | Efavirenz | Linagliptin | Possible decrease in antihyperglycemic effects |
Green: Administer standard doses | Administer standard doses | Monitor glycemic control |
|||||||
| 6039 | Efavirenz 3TC 424 | Efavirenz | 600 mg x 14 days | Not studied |
Lamivudine | 150 mg Q12H x 14 days | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6055 | Efavirenz ATV/c 440 | Efavirenz | Not studied |
Atazanavir / Cobicistat | Not studied (may decrease atazanavir and cobicistat levels) |
Potential loss of antiviral efficacy |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of atazanavir | Use alternative agents |
|||||
| 6071 | Efavirenz EE/NGM 456 | Efavirenz | 600 mg QHS | Ethinyl estradiol / Norgestimate | 0.035 mg ethinyl estradiol / 0.25 mg norgestimate x 14 days | Ethinyl estradiol: no significant change; Norgestromin AUC decreased 64%; Cmax decreased 46%; Cmin decrased 82% |
Decreased effects of ethinyl estradiol and norgestimate |
Red: Avoid combination | Do not coadminister: Reduced levels of progestin | Use alternative contraceptive method |
||||
| 6087 | Efavirenz Artemether / Lumefantrine 472 | Efavirenz | 600 mg daily x 26 days | Artemether / Lumefantrine | artemether 20mg / lumefantrine 120 mg 4 tablets / dose for 6 doses total in 3 days | Aremether AUC decreased 79%, Lumefantrine AUC decreased 30%-56%. |
Potentially compromised antimalarial activity |
Orange: Minimal data to guide interaction | Consider using alternative agents | If coadministering,dose adjustment not established. Monitor for anti-malarial efficacy. |
||||
| 6103 | Efavirenz Phenobarbital 488 | Efavirenz | Not studied (may decrease levels) |
Phenobarbital | Not studied |
Decreased efavirenz 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 phenobarbital levels and adjust as indicated |
|||||
| 6119 | Efavirenz CBZ 504 | Efavirenz | 600 mg daily x 14 days | Not studied (may decrease efavirenz levels) |
Carbamazepine | 200 mg daily x 3 days, 200 mg BID x 3 days, 400 mg daily for 20 days. | Carbmazepine AUC decreased 27%, Cmin 35%, Cmax decreased 20% |
Decreased efavirenz and carbamazepine effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | Use alternative agents. If coadministering, monitor carbamazepine levels and adjust as indicated. Monitor antiviral efficacy |
|||
| 5976 | Efavirenz Daclatasvir 361 | Efavirenz | 600 mg daily | Daclatasvir | 120 mg daily | Daclatasvir Cmax increased 67%; AUC increased 37%. |
Potential loss of anti-HCV efficacy |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of daclatasvir | Increase daclatasvir dose to 90 mg daily. |
||||
| 5992 | Efavirenz Simvastatin 377 | Efavirenz | 600 mg daily on days 4-18 | No significant change |
Simvastatin | 40 mg daily on days 0-3 and 15-18 | Simvastatin AUC decreased 58% |
Decreased lipid effects |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of simvastatin | Monitor statin efficacy. May need to increase simvastatin dose |
|||
| 6008 | Efavirenz RIF 393 | Efavirenz | 600 mg x 7 days | Efavirenz AUC decreased 26%; Cmax decreased 20% |
Rifampin | 600 mg x 7 days | Decreased efavirenz effects |
Green: Administer standard doses | Administer standard doses | Monitor for antiviral efficacy. May consider increasing efavirenz to 800 mg daily when used with rifampin |
Rifabutin | |||
| 6024 | Efavirenz RTV 409 | Efavirenz | 600 mg x 10 days | Efavirenz AUC increased 21%; Cmax no significant change |
Ritonavir | 500 mg Q12H x 8 days | Ritonavir AUC increased 18% after AM dose; Cmax increased 24% after AM dose; AUC no significant change after PM dose; Cmax no significant change after PM dose |
Increased efavirenz and ritonavir effects |
Green: Administer standard doses | Administer standard doses | ||||
| 6040 | Efavirenz Valproic acid 425 | Efavirenz | 600 mg daily | Efavirenz Cmin no significant change; Cmax no significant change; AUC no significant change; half-life: decreased 22% |
Valproic Acid | 250 mg BID x 7 days | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6056 | Efavirenz St. John's Wort (Hypericum perforatum) 441 | Efavirenz | Not studied (may decrease efavirenz levels) |
St. John's Wort | Not studied |
Decreased efavirenz effects |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of efavirenz | Contraindicated. Use alternative agents. |
|||||
| 6072 | Efavirenz EE/NGM 457 | Efavirenz | 600 mg daily for 14 days | Ethinyl estradiol / Norgestimate | 0.035 mg ethinyl estradiol / 0.25 mg norgestimate x 14 days | Ethinyl estradiol: no significant change; Norgestromin AUC decreased 64%; Cmax decreased 46%; Cmin decreased 82% |
Decreased effects of ethinyl estradiol and norgestimate |
Red: Avoid combination | Do not coadminister: Reduced levels of progestin | Use alternative contraceptive method |
||||
| 6088 | Efavirenz Atovaquone 473 | Efavirenz | 600 mg QHS | Atovaquone | 250 mg with 100 mg proguanil x 1 | Atovaquone AUC decreased 75%; Cmax decreased 44%. Proguanil AUC decreased 43% |
Potentially compromised antimalarial activity |
Orange: Minimal data to guide interaction | Consider using alternative agents | If coadministering,dose adjustment not established. Monitor for anti-malarial efficacy. |
||||
| 6104 | Efavirenz Phenobarbital 489 | Efavirenz | Phenobarbital | Not studied |
Decreased efavirenz 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 phenobarbital levels and adjust as indicated |
||||||
| 6120 | Efavirenz CBZ 505 | Efavirenz | 600 mg daily x 14 days | Not studied (may decrease efavirenz levels) |
Carbamazepine | 200 mg daily x 3 days, 200 mg BID x 3 days, 400 mg daily for 20 days. | Carbmazepine AUC decreased 27%, Cmin decreased 35%, Cmax decreased 20% |
Decreased efavirenz and carbamazepine effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | Use alternative agents. If coadministering, monitor carbamazepine levels and adjust as indicated. Monitor antiviral efficacy |
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| 5977 | Efavirenz DTG 362 | Efavirenz | 600 mg daily | Dolutegravir | 50 mg daily | Dolutegravir AUC decreased 57%; Cmin decreased 75% |
Potentially reduced dolutegravir effectiveness |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of dolutegravir | If no INSTI resistance, increase dolutegravir dosage to 50 mg BID. If known or clinically suspected INSTI resistance, use alternative combination |
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| 5993 | Efavirenz Simvastatin 378 | Efavirenz | 600 mg x 15 days | No significant change |
Simvastatin | 40 mg daily x 4 days | Simvastatin AUC decreased 68%; Cmax decreased 72%; Cmin decreased 45% |
Decreased simvastatin effects |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of simvastatin | Monitor statin efficacy. May need to increase simvastatin dose |
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| 6009 | Efavirenz RIF 394 | Efavirenz | Rifampin | Decreased efavirenz effects |
Green: Administer standard doses | Administer standard doses | Monitor for antiviral efficacy. May consider increasing efavirenz to 800 mg daily when used with rifampin |
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| 6025 | Efavirenz RTV 410 | Efavirenz | 600 mg x 10 days | Efavirenz AUC increased 21%; Cmax no significant change |
Ritonavir | 500 mg Q12H x 8 days | Ritonavir AUC increased 18% after AM dose; Cmax increased 24% after AM dose; AUC no significant change after PM dose; Cmax no significant change after PM dose |
Increased efavirenz and ritonavir effects |
Green: Administer standard doses | Administer standard doses | ||||
| 6041 | Efavirenz Medroxyprogesterone acetate 426 | Efavirenz | Efavirenz AUC no significant change |
Medroxyprogesterone acetate | 150 mg | Progesterone levels: no significant change |
Green: Administer standard doses | Administer standard doses | ||||||
| 6057 | Efavirenz Elvitegravir / Cobicistat / Emtricitabine / Tenofovir alafenamide 442 | Efavirenz | Not studied (may decrease elvitegravir and cobicistat levels) |
Elvitegravir / Cobicistat / Emtricitabine / Tenofovir alafenamide | Not studied |
Potentially decreased or increased elvitegravir, cobicistat and / or efavirenz effects |
Red: Avoid combination | Do not coadminister: Potential for reduced levels of elvitegravir / cobicistat | Use alternative agents |
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| 6073 | Efavirenz Etonogestrel 458 | Efavirenz | Etonogestrel | Etonogestrel decreased 61% |
Decreased effects of etonogestrel |
Red: Avoid combination | Do not coadminister: Reduced levels of progestin | Use alternative contraceptive method |
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| 6089 | Efavirenz Atovaquone 474 | Efavirenz | 600 mg QHS | Atovaquone | 250 mg with 100 mg proguanil x 1 | Atovaquone AUC decreased 75%; Cmax decreased 44%. Proguanil AUC decreased 43% |
Potentially compromised antimalarial activity |
Orange: Minimal data to guide interaction | Consider using alternative agents | If coadministering,dose adjustment not established. Monitor for anti-malarial efficacy. |
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| 6105 | Efavirenz Posaconazole 490 | Efavirenz | 400 mg daily | No significant change |
Posaconazole | 400 mg BID | Posaconazole AUC decreased 50%; Cmax decreased 45% |
Decreased posaconazole effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: risks likely to outweigh benefits | Consider using alternative agents. If coadministering, dose adjustment has not been established |
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| 6121 | Efavirenz CBZ 506 | Efavirenz | 600 mg daily x 35 days | EFV auc decreased 36%, Cmax decreased 21%, Cmin decreased 47% |
Carbamazepine | 200 mg daily x 3 days, 200 mg BID x 3 days, 400 mg daily for 15 days | Decreased efavirenz and carbamazepine effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | Use alternative agents. If coadministering, monitor carbamazepine levels and adjust as indicated. Monitor antiviral efficacy |
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| 5978 | Efavirenz MVC 363 | Efavirenz | 600 mg daily | Maraviroc | 100 mg BID | Maraviroc AUC decreased 45%; Cmax decreased 51%; Cmin decreased 45% |
Decreased maraviroc effects |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of maraviroc | Increase maraviroc dose to 600 mg BID |
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| 5994 | Efavirenz Voriconazole 379 | Efavirenz | 300 mg QHS x 7 days | No significant change |
Voriconazole | 300 mg Q12H on days 2-7 | Voriconazole AUC decreased 55%; Cmax decreased 36% (compared to voriconazole 200 mg BID) |
Decreased voriconazole effects |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of voriconazole and increased levels of efavirenz | Increase voriconazole to 400 mg Q12H and decrease efavirenz to 300 mg QHS |
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| 6010 | Efavirenz RIF 395 | Efavirenz | 600 mg x 7 days | Efavirenz AUC decreased 26%; Cmax decreased 20%, Cmin decreased 32% |
Rifampin | 600 mg x 7 days | Decreased efavirenz effects |
Green: Administer standard doses | Administer standard doses | Monitor for antiviral efficacy. May consider increasing efavirenz to 800 mg daily when used with rifampin |
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| 6026 | Efavirenz Prednisolone 411 | Efavirenz | not stated | Prednisolone | 20 mg x 1 | Prednisolone AUC decreased 21% |
Potential for increased prednisolone effects (adrenal insufficiency, Cushing?s syndrome). |
Green: Administer standard doses | Administer standard doses | |||||
| 6042 | Efavirenz SOF 427 | Efavirenz | 600 mg with emtricitaine 200 mg and tenofovir disoproxil fumarate 300 mg x 1 | Sofosbuvir | 400 mg x 1 | Sofosbuvir Cmax decreased 19% |
Green: Administer standard doses | Administer standard doses | ||||||
| 6058 | Efavirenz CBZ 443 | Efavirenz | 600 mg daily on days 1-35 | Efavirenz AUC decreased 36%; Cmax decreased 21%; Cmin decreased 47% |
Carbamazepine | 200 mg daily on days 1-3, 200 mg BID on days 4-6, 400 mg daily thereafter | Carbamazepine AUC decreased 27%; Cmax decreased 20%; Cmin decreased 35% |
Decreased efavirenz and carbamazepine levels |
Red: Avoid combination | Do not coadminister: Reduced levels of carbamazepine and efavirenz | Avoid combination and use alternative agents. If coadministering monitor carbamazepine levels and adjust as indicated. Monitor antiviral efficacy |
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| 6074 | Efavirenz Etonogestrel 459 | Efavirenz | Etonogestrel | Etonogestrel decreased 61% |
Decreased effects of etonogestrel |
Red: Avoid combination | Do not coadminister: Reduced levels of progestin | Use alternative contraceptive method |
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| 6090 | Efavirenz Atovaquone 475 | Efavirenz | Atovaquone | 250 mg with 100 mg proguanil x 1 | Atovaquone AUC decreased 75%; Cmax decreased 44%. Proguanil AUC decreased 43% |
Potentially compromised antimalarial activity |
Orange: Minimal data to guide interaction | Consider using alternative agents | If coadministering,dose adjustment not established. Monitor for anti-malarial efficacy. |
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| 6106 | Efavirenz Posaconazole 491 | Efavirenz | 400 mg BID x 10 and 20 days | No significant change |
Posaconazole | 400 mg BID for 10 and 20 days | Posaconazole AUC decreased 50%; Cmax decreased 45% |
Decreased posaconazole effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: risks likely to outweigh benefits | Consider using alternative agents. If coadministering, dose adjustment has not been established |
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| 6122 | Efavirenz CsA 507 | Efavirenz | Cyclosporine | decreased effects of immunosuppresant |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits when using this combination | if co administiring, monitor immunosuppressant efficacy |
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| 5979 | Efavirenz MVC 364 | Efavirenz | 600 mg daily | Maraviroc | 100 mg BID | Maraviroc AUC decreased 45%; Cmax decreased 51%; Cmin decreased 45% |
Decreased maraviroc effects |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of maraviroc | Increase maraviroc dose to 600 mg BID |
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| 5995 | Efavirenz Voriconazole 380 | Efavirenz | 300 mg QHS x 7 days | No significant change |
Voriconazole | 300 mg Q12H on days 2-7 | Voriconazole AUC decreased 55%; Cmax decreased 36% (compared to voriconazole 200 mg BID) |
Decreased voriconazole effects |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of voriconazole and increased levels of efavirenz | Increase voriconazole to 400 mg Q12H and decrease efavirenz to 300 mg QHS |
|||
| 6011 | Efavirenz DRV 396 | Efavirenz | 600 mg daily | Efavirenz AUC increased 21%; Cmin increased 17% |
Darunavir | 300 mg BID with ritonavir 100 mg BID | Darunavir Cmin decreased 31%; Cmax decreased 15%; AUC decreased 13% |
Potential for increased efavirenz effects |
Green: Administer standard doses | Administer standard doses | Monitor for increased risk of efavirenz related side effects. Consider monitoring drug levels |
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| 6027 | Efavirenz RAL 412 | Efavirenz | 600 mg x 14 days | Raltegravir | 400 mg x 1 | Raltegravir AUC decreased 36%; Cmin decreased 21%; Cmax decreased 36% |
Green: Administer standard doses | Administer standard doses | ||||||
| 6043 | Efavirenz Aluminum and magnesium hydroxide antacid 428 | Efavirenz | 400 mg x 1 dose | No significant change |
Aluminum and magnesium hydroxide antacid | 30 mL x 1 dose | Green: Administer standard doses | Administer standard doses | ||||||
| 6059 | Efavirenz Cariprazine 444 | Efavirenz | Cariprazine | Decreased cariprazine levels |
Red: Avoid combination | Do not coadminister: Reduced levels of cariprazine | Avoid combination and use alternative agents |
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| 6075 | Efavirenz Etonogestrel 460 | Efavirenz | Etonogestrel | Decreased effects of etonogestrel |
Red: Avoid combination | Do not coadminister: Reduced levels of progestin | Use alternative contraceptive method |
|||||||
| 6091 | Efavirenz Itraconazole 476 | Efavirenz | 600 mg x 14 days | No significant change |
Itraconazole | 200 mg Q12H x 28 days | Itraconazole AUC decreased 39%; Cmax decreased 37%; Cmin decreased 44%; Hydroxyitraconazole AUC decreased 37%; Cmax decreased 35%; Cmin decreased 43% |
Decreased itraconazole effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: risks likely to outweigh benefits | Avoid combination and use alternative agents |
|||
| 6107 | Efavirenz Posaconazole 492 | Efavirenz | 400 mg daily x 10 and 20 days | Posaconazole | 400 mg BID x 10 and 20 days | Posaconazole AUC decreased 50%; Cmax decreased 45% |
Decreased posaconazole effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: risks likely to outweigh benefits | Consider using alternative agents. If coadministering, dose adjustment has not been established |
||||
| 6123 | Efavirenz CsA 508 | Efavirenz | Cyclosporine | decreased effects of immunosuppresant |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits when using this combination | if co administiring, monitor immunosuppressant efficacy |
|||||||
| 5980 | Efavirenz Methadone 365 | Efavirenz | 600 mg x 14-21 days | Methadone | 35-100 mg daily | Methadone AUC decreased 52%; Cmax decreased 45% |
Decreased methadone effects (eg, 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. In one study patients required mean dose increase of 30% over period of 60 weeks. |
||||
| 5996 | Efavirenz Voriconazole 381 | Efavirenz | 300 mg x 7 days | No significant change |
Voriconazole | 300 mg Q12H on days 2-7 | Voriconazole AUC decreased 55%; Cmax decreased 36% (compared to voriconazole 200 mg BID) |
Decreased voriconazole effects |
Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of voriconazole and increased levels of efavirenz | Increase voriconazole to 400 mg Q12H and decrease efavirenz to 300 mg QHS |
|||
| 6012 | Efavirenz Isavuconazole 397 | Efavirenz | Isavuconazole | Possible decreased Isavuconazole levels |
Green: Administer standard doses | Administer standard doses | monitor for isravucanazole concentrations and anti fungal response |
|||||||
| 6028 | Efavirenz Fluconazole 413 | Efavirenz | 400 mg x 7 days | AUC increased 16%; Cmax no significant change |
Fluconazole | 200 mg x 7 days | No significant change |
Green: Administer standard doses | Administer standard doses | |||||
| 6044 | Efavirenz AZT, ZDV 429 | Efavirenz | 600 mg daily x 14 days | No significant change |
Zidovudine | 300 mg Q12h x 14 days | Green: Administer standard doses | Administer standard doses | ||||||
| 6060 | Efavirenz EBR/GZR 445 | Efavirenz | 600 mg daily x 14 days | Elbasvir / Grazoprevir | Elbasvir 50 mg daily with grazoprevir 100 mg daily | Elbasvir AUC decreased 54% Grazoprevir AUC decreased 83% |
decreased of elbasvir / grazoprevir effects |
Red: Avoid combination | Do not coadminister: Reduced levels of elbasvir / grazoprevir | Contraindicated. Use alternative agents. |
||||
| 6076 | Efavirenz Ethinyl estradiol / Norethindrone acetate 461 | Efavirenz | 400 mg x 10 days | No significant change |
Ethinyl estradiol / Norethindrone acetate | Ethinyl estradiol 50 mcg x 1 dose | No significant change |
Red: Avoid combination | Do not coadminister: Reduced levels of progestin | Use alternative contraceptive method |
||||
| 6092 | Efavirenz Itraconazole 477 | Efavirenz | 600 mg x 14 days | Itraconazole | 200 mg Q12H x 28 days | Itraconazole AUC decreased 39%; Cmax decreased 37%; Cmin decreased 44%; Hydroxyitraconazole AUC decreased 37%; Cmax decreased 35%; Cmin decreased 43% |
Decreased itraconazole effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: risks likely to outweigh benefits | Avoid combination and use alternative agents |
||||
| 6108 | Efavirenz Proguanil 493 | Efavirenz | 400 mg daily | Proguanil | 300 mg x 1 | Proguanil AUC increased 113%; Cmax increased 47%; Cycloguanil AUC decreased 38%; Cmax decreased 31% |
Potential decreased antimalarial effects |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: risks likely to outweigh benefits | Consider using alternative agents. If coadministering, dose adjustment not established |
||||
| 6124 | Efavirenz CsA 509 | Efavirenz | Cyclosporine | decreased effects of immunosuppresant |
Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits when using this combination | if co administiring, monitor immunosuppressant efficacy |

