Drug interactions
Avanafil + Riociguat
Severity: Contraindicated
Avanafil and Riociguat: 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
Riociguat with avanafil may produce additive systemic vasodilation and symptomatic hypotension. PDE5 inhibitors are contraindicated with riociguat by labeling.
What this interaction means in plain words
Avanafil and Riociguat 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.
Avanafil belongs to Genitourinary; Riociguat belongs to Cardiovascular.
Why it happens
Riociguat stimulates soluble guanylate cyclase to increase cGMP while avanafil inhibits its degradation, causing additive vasodilation.
What to do
Do not coadminister; select one agent for the indication. Follow labeled washout intervals when switching.
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?
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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 Riociguat
- Dipyridamole + Riociguat Contraindicated
- Isosorbide dinitrate + Riociguat Contraindicated
- Isosorbide mononitrate + Riociguat Contraindicated
- Nitroglycerin + Riociguat Contraindicated
- Riociguat + Sildenafil Contraindicated
- Riociguat + Tadalafil Contraindicated
Frequently asked questions
Can I take Avanafil with Riociguat?
MediHelp rates the interaction as contraindicated. Avanafil and Riociguat 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. Riociguat with avanafil may produce additive systemic vasodilation and symptomatic hypotension. PDE5 inhibitors are contraindicated with riociguat by labeling.
How serious is the interaction between Avanafil and Riociguat?
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 coadminister; select one agent for the indication. Follow labeled washout intervals when switching.
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.
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