Drug interactions
Amyl nitrite + Avanafil
Severity: Contraindicated
Amyl nitrite and Avanafil: contraindicated 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
Both agents increase nitric oxide-cGMP signaling and vasodilation. Together they can cause profound, potentially fatal hypotension and syncope.
What this interaction means in plain words
Amyl nitrite and Avanafil are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Why it happens
Additive vasodilation through nitrate-induced cGMP production and PDE5 inhibition preventing its breakdown.
What to do
Do not use together; nitrates are contraindicated with PDE5 inhibitors. Avoid recreational nitrite inhalants for a prolonged period after avanafil and seek emergency care for severe hypotension.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Amyl nitrite and Avanafil, 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 14 days on the web. No card needed.
Other interactions of Avanafil
- Atazanavir + Avanafil Contraindicated
- Avanafil + Clarithromycin Contraindicated
- Avanafil + Conivaptan Contraindicated
- Avanafil + Darunavir Contraindicated
- Avanafil + Fosamprenavir Contraindicated
- Avanafil + Indinavir Contraindicated
Frequently asked questions
Can I take Amyl nitrite with Avanafil?
MediHelp rates the interaction as contraindicated. Amyl nitrite and Avanafil are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Both agents increase nitric oxide-cGMP signaling and vasodilation. Together they can cause profound, potentially fatal hypotension and syncope.
How serious is the interaction between Amyl nitrite and Avanafil?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not use together; nitrates are contraindicated with PDE5 inhibitors. Avoid recreational nitrite inhalants for a prolonged period after avanafil and seek emergency care for severe hypotension.
What other medicines interact with Avanafil?
MediHelp also lists interactions of Avanafil with, for example, Atazanavir, Clarithromycin, Conivaptan. 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.
