Drug interactions
Avanafil + Lenacapavir
Severity: Moderate
Avanafil and Lenacapavir: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Lenacapavir is a moderate CYP3A4 inhibitor and may increase avanafil exposure. The effect can persist for months after the last subcutaneous lenacapavir dose.
What this interaction means in plain words
Avanafil and Lenacapavir can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Avanafil belongs to Genitourinary; Lenacapavir belongs to Anti Virals.
Why it happens
Inhibition of CYP3A4 reduces avanafil clearance.
What to do
Limit avanafil to 50 mg no more than once every 24 hours and monitor for hypotension and adverse effects, including after lenacapavir discontinuation.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Avanafil and Lenacapavir, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Avanafil
- Amyl nitrite + Avanafil Contraindicated
- Atazanavir + Avanafil Contraindicated
- Avanafil + Clarithromycin Contraindicated
- Avanafil + Conivaptan Contraindicated
- Avanafil + Darunavir Contraindicated
- Avanafil + Fosamprenavir Contraindicated
Other interactions of Lenacapavir
- Apalutamide + Lenacapavir Contraindicated
- Carbamazepine + Lenacapavir Contraindicated
- Enzalutamide + Lenacapavir Contraindicated
- Flibanserin + Lenacapavir Contraindicated
- Lenacapavir + Phenytoin Contraindicated
- Lenacapavir + Rifampicin Contraindicated
Frequently asked questions
Can I take Avanafil with Lenacapavir?
MediHelp rates the interaction as moderate. Avanafil and Lenacapavir can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Lenacapavir is a moderate CYP3A4 inhibitor and may increase avanafil exposure. The effect can persist for months after the last subcutaneous lenacapavir dose.
How serious is the interaction between Avanafil and Lenacapavir?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Limit avanafil to 50 mg no more than once every 24 hours and monitor for hypotension and adverse effects, including after lenacapavir discontinuation.
What other medicines interact with Avanafil?
MediHelp also lists interactions of Avanafil with, for example, Amyl nitrite, Atazanavir, Clarithromycin. The full list is on the Avanafil page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
