Yellow: Adjust dosing
| Interaction Color Code | Clinical Bottom Line | Clinical Effects | Drug 1 effect | Drug 2 dose | Drug 2 effect | Management | |
|---|---|---|---|---|---|---|---|
| Lenacapavir Midazolam 1 | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential for increased sedation |
Not reported |
2.5 mg orally x 1 with food, administered 1 day after LEN | AUC increased 308%; Cmax increased 116%. AUC for 1-hydroxy metabolite decreased 16%. |
If co-administering, monitor for excess sedation and adjust dose accordingly |
| Lenacapavir Zolpidem | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of excessive sedation |
If coadministering, initiate lowest starting dose. Monitor for excessive sedation. |
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| Lenacapavir Warfarin | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of bleeding |
Use with caution. Monitor INR and for warfarin adverse effects (e.g. bleeding) |
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| Lenacapavir Verapamil | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of verapamil adverse effects |
If coadministering, monitor for cardiac medication adverse effects (e.g. hypotension) |
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| Lenacapavir Vardenafil | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Increased risk of vardenafil adverse effects (e.g. flushing, headache, hypotension) |
If co-administering vardenafil for erectile dysfunction, dose should not exceed 5 mg per 24 hour. Monitor for adverse effects. |
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| Lenacapavir Ubrogepant | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of ubrogepant adverse effects |
If coadministering, avoid taking a second dose of ubrogepant within 24 hours |
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| Lenacapavir Triazolam | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Increased risk of triazolam adverse effects |
If coadministering, monitor for triazolam adverse effects (e.g. sedation, respiratory depression). |
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| Lenacapavir Triamcinolone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of corticosteroid adverse effects (e.g. Cushing's syndrome and adrenal supression). |
If used for local injections, monitor for corticosteroid-related adverse effects (e.g. Cushing's syndrome, adrenal insufficiency). |
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| Lenacapavir Trazodone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of trazodone adverse effects (e.g. sedation, CNS effects) |
If coadministering start with lowest dose and titrate to clinical effect. Monitor for trazodone-related adverse events. |
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| Lenacapavir Tramadol | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Increased risk of tramadol adverse effects |
If coadministering, consider decreasing tramadol dose when coadministering. Titrate to clinical effect and monitor for sedation. |
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| Lenacapavir Thioridazine | Yellow: Adjust dosing | Minimal data to guide interaction: risks likely to outweigh benefits | Potential loss of antiviral efficacy |
Consider using alternative antipsychotic |
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| Lenacapavir Tadalafil | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Increased risk of tadalafil adverse effects (e.g. flushing, headache, hypotension) |
Pulmonary arterial hypertension: coadministration of lenacapavir with tadalafil is not recommended. Erectile dysfunction: When used on an "as needed" basis, tadalafil dose should not exceed 10 mg every 72 hours. If used once daily (chronic administration), tadalafil dose should not exceed 2.5 mg daily. |
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| Lenacapavir Tacrolimus | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of immunosuppressant adverse effects |
Initiate adjusted dose of immunosuppressant to account for increased concentration and follow up with therapeutic drug monitoring to refine dosing. Monitor for adverse effects of immunosuppressant. Consult with specialist as necessary. |
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| Lenacapavir Suvorexant | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of excessive sedation |
If coadministering, initiate dose at 5 mg daily. May increase to 10 mg daily if not effective. Monitor for excessive sedation. |
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| Lenacapavir Sirolimus | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of immunosuppressant adverse effects |
Initiate adjusted dose of immunosuppressant to account for increased concentration and follow up with therapeutic drug monitoring to refine dosing. Monitor for adverse effects of immunosuppressant. Consult with specialist as necessary. |
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| Lenacapavir Simvastatin | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Increased risk of simvastatin adverse effects |
Initiate simvastatin with the lowest starting dose and titrate to clinical effect. Monitor for adverse effects of lovastatin (e.g. myopathy, elevated transaminases). |
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| Lenacapavir Sildenafil | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Increased risk of sildenafil adverse effects (e.g. flushing, headache, hypotension). |
Use of PDE-5 inhibitors for pulmonary arterial hypertension (PAH): Concomitant administration of SUNLENCA with tadalafil for the treatment of PAH is not recommended. Use of PDE-5 inhibitors for erectile dysfunction (ED): Refer to the prescribing information of sildenafil for dose recommendations. Use of PDE-5 inhibitors for pulmonary arterial hypertension (PAH): Do not coadminaster sildenafil with Lenacapavir. Use of PDE-5 inhibitors for erectile dysfunction (ED): Adjust dosing to avoid increased levels sildenafil |
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| Lenacapavir Rivaroxaban | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of bleeding |
Use with caution. Monitor for rivaroxaban adverse effects (e.g. bleeding). Avoid coadministration in persons with renal impairment (CrCL 15 - 80 ml/min) due to increased risk of bleeding. |
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| Lenacapavir Rimegepant | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of rimegepant adverse effects |
If coadministering, avoid taking a second dose of rimegepant within 48 hours |
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| Lenacapavir Ranolazine | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of ranolazine adverse effects |
If coadministering, do not exceed ranolazine dose of 500 mg twice daily. |
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| Lenacapavir Quetiapine | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of quetiapine adverse effects (e.g. sedation, QT prolongation) |
Consider using alternative antipsychotics. If coadministering, consider quetiapine dose reduction and monitor for adverse effects. |
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| Lenacapavir Propafenone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of propafenone adverse effects |
Consider using alternative antiarrhythmic or ARV. If coadministering, monitor for propafenone adverse effects. |
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| Lenacapavir Prednisone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of corticosteroid adverse effects (e.g. Cushing's syndrome and adrenal supression). |
If co-administering, initiate with the lowest starting dose and titrate to clinical effect. Monitor for corticosteroid-related adverse effects (e.g. Cushing's syndrome, adrenal insufficiency). |
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| Lenacapavir Prednisolone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of corticosteroid adverse effects (e.g. Cushing's syndrome and adrenal supression). |
If co-administering, initiate with the lowest starting dose and titrate to clinical effect. Monitor for corticosteroid-related adverse effects (e.g. Cushing's syndrome, adrenal insufficiency). |
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| Lenacapavir Praziquantel | Yellow: Adjust dosing | Minimal data to guide interaction: risks likely to outweigh benefits | Potential increased risk of praziquantel adverse effects |
Consider alternative antiretroviral. If coadministration is necessary, monitor for praziquantel adverse effects. |
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| Lenacapavir Oxycodone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Increased risk of oxycodone adverse effects |
If coadministering, monitor therapeutic effects and adverse reactions (e.g. sedation, respiratory depression) |
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| Lenacapavir Nifedipine | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of nifedipine adverse effects |
If coadministering, monitor for cardiac medication adverse effects (e.g. hypotension) |
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| Lenacapavir Naloxegol | Yellow: Adjust dosing | Minimal data to guide interaction: risks likely to outweigh benefits | Increased risk of naloxegol adverse effects |
Consider using alternative agents. If coadministration is unavoidable, decrease dose of naloxegol and monitor for adverse reactions. |
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| Lenacapavir Mometasone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of corticosteroid adverse effects (e.g. Cushing's syndrome and adrenal supression). |
If coadministering, initiate lowest starting dose and titrate to clinical effect. Monitor for adverse effects such as adrenal insufficiency and Cushing's syndrome. |
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| Lenacapavir Midazolam | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential for increased sedation |
Not reported |
2.5 mg orally x 1, administered simultaneously with LEN | AUC increased 259%; Cmax increased 94%. AUC for 1-hydroxy metabolite decreased 24%. |
If co-administering, monitor for excess sedation and adjust dose accordingly |
| Lenacapavir Methylprednisolone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of corticosteroid adverse effects (e.g. Cushing's syndrome and adrenal supression). |
If used for local injections, monitor for corticosteroid-related adverse effects (e.g. Cushing's syndrome, adrenal insufficiency). |
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| Lenacapavir Methadone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Unknown effect on methadone |
If initiating methadone in a person already on lenacapavir, start with lowest feasible dose and titrate to clinical effect. If initiating lenacapavir in a person stable on methadone, dose adjustment of methadone may be required. Monitor for clinical efficacy and adverse effects (e.g. sedation, respiratory depression). |
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| Lenacapavir Mefloquine | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of mefloquine adverse effects |
If coadministering, monitor for mefloquine adverse effects (e.g. QT prolongation) |
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| Lenacapavir Mavacamten | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of mavacamten adverse effects |
If initiating lenacapavir in patients stable on mavacamten, reduce mavacamten dose by one level (e.g. 15 mg to 10 mg, 10 mg to 5 mg, 5 mg to 2.5 mg). If initiating mavacamten in patients stable on lenacapavir, use typical starting dose (5 mg daily). |
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| Lenacapavir Lurasidone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of lurasidone adverse effects |
If initiating lurasidone in a person stable on lenacapavir, recommended starting dose is 20 mg daily, not to exceed 80 mg daily. If initiating lenacapavir in a person stable on lurasidone, reduce lurasidone dose by 50% |
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| Lenacapavir Lumateperone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of lumateperone adverse effects |
If coadministering, reduce lumateperone dose to 21 mg |
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| Lenacapavir Lovastatin | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Increased risk of lovastatin adverse effects |
Initiate lovastatin with the lowest starting dose and titrate to clinical effect. Monitor for adverse effects of lovastatin (e.g. myopathy, elevated transaminases). |
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| Lenacapavir Lidocaine | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of lidocaine adverse effects |
Consider using alternative antiarrythmic or ARV. If coadministering, monitor for lidocaine adverse effects. |
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| Lenacapavir Hydrocortisone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of corticosteroid adverse effects (e.g. Cushing's syndrome and adrenal supression). |
If co-administering, initiate with the lowest starting dose and titrate to clinical effect. Monitor for hydrocortisone-related adverse effects. |
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| Lenacapavir Fluticasone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of corticosteroid adverse effects (e.g. Cushing's syndrome and adrenal supression). |
If coadministering, initiate lowest starting dose and titrate to clinical effect. Monitor for adverse effects such as adrenal insufficiency and Cushing's syndrome. |
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| Lenacapavir Fentanyl | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Increased risk of fentanyl adverse effects |
If coadministering, monitor therapeutic effects and adverse reactions (e.g. sedation, respiratory depression) |
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| Lenacapavir Felodipine | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of felodipine adverse effects |
If coadministering, monitor for cardiac medication adverse effects (e.g. hypotension) |
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| Lenacapavir Everolimus | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of immunosuppressant adverse effects |
Initiate adjusted dose of immunosuppressant to account for increased concentration and follow up with therapeutic drug monitoring to refine dosing. Monitor for adverse effects of immunosuppressant. Consult with specialist as necessary. |
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| Lenacapavir Ethosuximide | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased ethosuximide effects |
If coadministering monitor for ethosuximide-related adverse events. |
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| Lenacapavir Eszopiclone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of excessive sedation |
If coadministering, initiate lowest starting dose. Monitor for excessive sedation. |
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| Lenacapavir Eplerenone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of eplerenone adverse effects |
If coadministering in the setting of post-MI heart failure, eplerenone dose not to exceed 25 mg daily. If coadministered for hypertension, initiate eplerenone at 25mg daily. Dose not to exceed 25 mg twice daily. |
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| Lenacapavir Edoxaban | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of bleeding |
Use with caution. Monitor for edoxaban adverse effects (e.g. bleeding) |
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| Lenacapavir Dronedarone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of dronedarone adverse effects |
Consider using alternative cardiac medication or ARV. If coadministering, monitor for dronedarone adverse effects. |
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| Lenacapavir Diltiazem | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of diltiazem adverse effects |
If coadministering, monitor for cardiac medication adverse effects (e.g. hypotension) |
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| Lenacapavir Digoxin | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of digoxin adverse effects |
Use with caution and monitor digoxin therapeutic concentration |
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| Lenacapavir Diazepam | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of sedation, respiratory depression |
Consider alternative benzodiazepines. If coadministering, use lowest effective dose and monitor for diazepam adverse effects. |
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| Lenacapavir Dexamethasone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of corticosteroid adverse effects (e.g. Cushing's syndrome and adrenal supression). |
If co-administering, initiate with the lowest starting dose and titrate to clinical effect. Do not use doses of dexamethasone > 16 mg. Monitor for dexamethasone-related adverse effects. |
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| Lenacapavir Daridorexant | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of excessive sedation |
If coadministering, maximum dose of daridorexant is 25 mg. |
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| Lenacapavir Dabigatran | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of bleeding |
Use with caution. Monitor for dabigatran adverse effects (e.g. bleeding) |
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| Lenacapavir Cyclosporine | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of immunosuppressant adverse effects |
Initiate adjusted dose of immunosuppressant to account for increased concentration and follow up with therapeutic drug monitoring to refine dosing. Monitor for adverse effects of immunosuppressant. Consult with specialist as necessary. |
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| Lenacapavir Colchicine | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of GI adverse effects |
If using for gout flare may coadminister a single dose of 1.2 mg. May not repeat dose for at least 3 days. If using for Familiar Mediterranean Fever do not exceed colchicine dose of 1.2 mg daily. |
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| Lenacapavir Cobicistat | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Increased risk of lenacapavir adverse effects |
AUC increased 128%; Cmax increased 110% |
150 mg once daily (in fed state) | Not reported |
Management of interaction depends on component that cobicistat is serving as a PK booster for. See partner antiretroviral for further details. |
| Lenacapavir Clopidogrel | Yellow: Adjust dosing | Minimal data to guide interaction: risks likely to outweigh benefits | Potential increased risk of bleeding |
Consider using alternative ARV or antiplatelet agents. If coadministering, monitor for clopidogrel-related adverse events (e.g. bleeding) |
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| Lenacapavir Clonazepam | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of sedation, respiratory depression |
Consider alternative benzodiazepines. If coadministering, use lowest effective dose and monitor for clonazepam adverse effects. |
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| Lenacapavir Buspirone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of buspirone adverse effects |
If coadministering start with lowest dose and titrate to clinical effect. Monitor for buspirone-related adverse events. |
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| Lenacapavir Buprenorphine | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Unknown effect on buprenorphine |
If initiating buprenorphine in a person already on lenacapavir, start with lowest feasible dose and titrate to clinical effect. If initiating lenacapavir in a person stable on buprenorphine, dose adjustment of buprenorphine may be required. Monitor for clinical efficacy and adverse effects (e.g. sedation, respiratory depression). |
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| Lenacapavir Budesonide | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of corticosteroid adverse effects (e.g. Cushing's syndrome and adrenal supression). |
If coadministering, initiate lowest starting dose and titrate to clinical effect. Monitor for adverse effects such as adrenal insufficiency and Cushing's syndrome. |
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| Lenacapavir Brexpiprazole | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of brexpiprazole adverse effects |
If coadministering in patients known to be poor CYP2D6 metabolizers, use 1/4 of brexpiprazole dose. Monitor for adverse events. |
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| Lenacapavir Betamethasone | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of corticosteroid adverse effects (e.g. Cushing's syndrome and adrenal supression). |
If used for local injections, monitor for corticosteroid-related adverse effects (e.g. Cushing's syndrome, adrenal insufficiency). |
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| Lenacapavir Bedaquiline | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential for increased bedaquiline levels |
Consider alternative agents. If coadministering, monitor LFTs and ECG. |
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| Lenacapavir Avanafil | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of avanafil adverse effects (e.g. hypotension) |
If coadministering, avanafil dose should not exceed 50 mg in 24 hours |
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| Lenacapavir Artemether/Lumefantrine | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of lumefantrine adverse effects |
If coadministering, monitor for lumefantrine adverse effects (e.g. QT prolongation) |
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| Lenacapavir Apixaban | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of bleeding |
Use with caution. Monitor for apixaban adverse effects (e.g. bleeding) |
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| Lenacapavir Amlodipine | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of amlodipine adverse effects |
If coadministering, monitor for cardiac medication adverse effects (e.g. hypotension) |
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| Lenacapavir Alprazolam | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential increased risk of sedation, respiratory depression |
If coadministering, use lowest effective dose and monitor for alprazolam adverse effects |
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| Lencapavir Alfuzosin | Yellow: Adjust dosing | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential for increased alfuzosin effects |
Consider alternative to alfuzosin. If coadministered, monitor for adverse effects (e.g. hypotension) |
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| Ritonavir Methadone 1053 | Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of methadone | Stable methadone dose | No significant effect |
If coadministering monitor for signs and symptoms of methadone withdrawal. Some patients may require an increased methadone dose |
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| Ritonavir Methadone 1052 | Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of methadone | Not clinically significant |
S-methadone AUC decreased 25%; R-methadone AUC decreased 20% |
If coadministering monitor for signs and symptoms of methadone withdrawal. Some patients may require an increased methadone dose |
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| Ritonavir Methadone 1051 | Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of methadone | Decreased methadone effects (eg, methadone withdrawal) |
90 mg daily x 2 years | Methadone AUC decreased |
If coadministering monitor for signs and symptoms of methadone withdrawal. Some patients may require an increased methadone dose |
|
| Ritonavir Warfarin 1050 | Yellow: Adjust dosing | Adjust dosing to avoid increased or reduced levels of warfarin | Decreased warfarin effects (eg, decreased INR, increased risk of clotting) |
12.5 mg daily | INR: decreased |
If coadministering monitor INR and adjust warfarin as indicated. Monitor for signs and symptons of bleeding. |
|
| Ritonavir Vardenafil 1049 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of vardenafil | Increased tadalafil effects |
5 mg daily | Vardenafil AUC increased 49-fold; Cmax increased 13-fold. T1 / 2 increased to 26 hours. |
Initiate (and do not exceed) vardenafil 2.5 mg every 72 hours and monitor for adverse effects |
|
| Ritonavir Trazodone 1048 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of trazodone | Increased trazodone effects (eg, nausea, hypotension, syncope) |
Not studied |
50 mg x 1 dose | Trazodone AUC increased 240%; Cmax increased 34%; half-life: increased 220% |
Decrease trazodone dose or start low and titrate to effect |
| Ritonavir Trazodone 1047 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of trazodone | Increased trazodone effects (eg, nausea, dizziness, hypotension, syncope) |
Trazodone AUC increased 2.4-fold; Cmax increased 34% |
Decrease trazodone dose or start low and titrate to effect |
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| Ritonavir Tadalafil 1046 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of tadalafil | Increased tadalafil effects (eg, hypotension, priapism) |
20 mg x 1 | Tadalafil AUC increased 32%, Cmax decreased 30% |
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. |
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| Ritonavir Tadalafil 1045 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of tadalafil | Increased tadalafil effects (eg, hypotension, priapism) |
20 mg x 1 | Tadalafil AUC increased 124% |
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. |
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| Ritonavir Sildenafil 1044 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of sildenafil. (Do not coadminister for pulmonary hypertension) | Increased sildenafil effects (eg, hypotension, priapism) |
100 mg x 1 dose | Sildenafil AUC increased 1000%; Cmax increased 290%; Tmax: delayed 3 hours |
For erectile dysfunction, initiate sildenafil 25 mg every 48 hours and monitor for adverse effects. Manufacturer recommends not to exceed dose of 25 mg every 48 hours. Do not coadminister if using sildenafil for pulmonary arterial hypertension. |
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| Ritonavir RFB 1043 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of rifabutin | Increased rifabutin effects (eg, uveitis) |
150 mg daily x 24 days | Rifabutin AUC increased 400%; Cmax increased 250% |
Decrease rifabutin to 150 mg every other day or 300 mg 3 times / week |
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| Ritonavir MVC 1042 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of maraviroc | Increased maraviroc effects |
100 mg BID | Maraviroc AUC increased 161%; Cmin increased 355%; Cmax increased 28% |
Reduce dose of maraviroc to 150 mg BID with strong CYP3A4 inhibitors |
|
| Ritonavir Fentanyl 1041 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of fentanyl | Increased fentanyl effects (eg, increased sedation, confusion, respiratory depression) |
5 mcg / kg | Fentanyl clearance decreased 67% |
Monitor closely, start with low dose and titrate to pain response as indicated |
|
| Ritonavir Digoxin 1040 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of digoxin | Increased digoxin effects |
0.4 mg x 1 dose | Digoxin AUC (0-8 hr): increased 29%; AUC (0-72 hr): increased 22%; clearance: decreased 30%; half-life: increased 43% |
Digoxin dose may need to be decreased. Monitor digoxin level and adjust digoxin dose based on clinical signs and drug levels. |
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| Ritonavir Colchicine 1039 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of colchicine | Increased colchicine effects |
0.6 mg x 1 | Colchicine AUC increased 296%; Cmax increased 184% |
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. |
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| Ritonavir Clarithromycin 1038 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of clarithromycin | Increased clarithromycin effects |
AUC no significant change; Cmax increased 15% |
500 mg BID | Clarithromycin AUC increased 77%; Cmax increased 31%; Cmin increased 182% |
Reduce clarithromycin dose by 50% in patients with CrCl 30-60 mL / min. Reduce clarithromycin dose by 75% in patients with CrCl <30 mL / min. |
| Ritonavir Bosentan 1037 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of bosentan | Possible increased bosentan effects |
Not studied |
Not studied (may increase bosentan levels) |
Start low and titrate bosentan to effect. If patient has been on protease inhibitor (other than unboosted atazanavir) for more than 10 days, start bosentan at 62.5 mg daily or every other day. If patient is currently on bosentan and requires a PI (other than unboosted atazanavir), stop bosentan for at least 36 hours prior to initiating ART. Wait 10 days and then resume bosentan starting with 62.5 mg daily or every other day. |
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| Ritonavir ATV 1036 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of atazanavir | Increased atazanavir effects |
Not studied |
300 mg daily on days 1-20 | Atazanavir AUC increased 238%; Cmax increased 86%; Cmin increased 1089% |
Dose atazanavir 300 mg once daily with ritonavir 100 mg daily |
| Ritonavir Olanzapine 1035 | Yellow: Adjust dosing | Adjust dosing to avoid decreased levels of olanzapine | Decreased olanzapine effects |
Not studied |
10 mg daily | Olanzapine AUC decreased 53%; half-life: decreased 50%; clearance: increased 115%; Cmax decreased 40% |
Monitor clinical improvement and adjust olanzapine as indicated |
| Ritonavir ETR 1034 | Yellow: Adjust dosing | Adjust dosing to avoid decreased levels of etravirine | Etravirine AUC decreased 46%; Cmax decreased 32% |
For ritonavir boosting - refer to individual protease inhibitors for specific recommendation |
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| Darunavir Warfarin 899 | Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of warfarin | Decreased warfarin effects (e.g. decreased INR, increased risk of clotting) |
Not reported |
10 mg x 1 | S-warfarin Cmax decrease 8%, AUC decrease 21% |
If coadministering, monitor INR and adjust warfarin as indicated. Monitor for signs and symptons of bleeding. |
| Darunavir Sertraline 898 | Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of sertraline | Potential decreased sertraline effects |
No significant change |
50 mg once daily | Cmax decrease 44%, AUC decrease 49%, Cmin decrease 49% |
Titrate sertraline to effect; monitor to ensure continued response if darunavir / ritonavir initiated |
| Darunavir Paroxetine 897 | Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of paroxetine | Potential decreased paroxetine effects |
No significant change |
20 mg once daily | Cmax decrease 36%, AUC decrease 39%, Cmin decrease 37% |
Titrate paroxetine to effect; monitor for continued antidepressant response if darunavir / ritonavir initiated |
| Darunavir Methadone 896 | Yellow: Adjust dosing | Adjust dosing to avoid reduced levels of methadone | May decrease methadone effects (e.g. withdrawal) |
Not reported |
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% |
If coadministering monitor for signs and symptoms of methadone withdrawal. Some patients may require an increased methadone dose |
| Darunavir Solifenacin 895 | Yellow: Adjust dosing | Adjust dosing to avoid increased solifenacin levels | Potential for increased risk of zolpidem adverse effects |
If coadministering, do not exceed solifenacin 5 mg once daily |
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| Darunavir Saxagliptin 894 | Yellow: Adjust dosing | Adjust dosing to avoid increased saxagliptin levels | Potential for increased saxagliptin adverse effects |
If coadministering, do not exceed saxagliptin dose of 2.5 mg once daily |
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| Darunavir Pimavanserin 893 | Yellow: Adjust dosing | Adjust dosing to avoid increased pimavanserin levels | Potential for increased risk of pimavanserin adverse effects |
If coadministering, decrease dose of pimavanserin to 10 mg once daily |
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| Darunavir Vardenafil 892 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of vardenafil | Increased risk of vardenafil adverse effects (e.g. hypotension, priapism) |
Do not exceed 2.5 mg dose in 72 hours |
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| Darunavir Thioridazine 891 | Yellow: Adjust dosing | Adjust dosing to avoid increased levels of thioridazine | Potential for increased risk of thioridazine adverse effects |
If coadministering, dose reduction may be necessary |

