Drug interactions
Riociguat + Vardenafil
Severity: Contraindicated
Riociguat and Vardenafil: 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 stimulates soluble guanylate cyclase and vardenafil prevents cGMP degradation, which together produce severe additive hypotension. Labeling prohibits PDE5 inhibitors with riociguat.
What this interaction means in plain words
Riociguat and Vardenafil 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 belongs to Cardiovascular; Vardenafil belongs to Genitourinary.
Why it happens
Increased cGMP synthesis plus reduced cGMP breakdown cause additive vasodilation.
What to do
Do not combine. Use a different treatment for erectile dysfunction in patients on riociguat.
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 Vardenafil
- Amyl nitrite + Vardenafil Contraindicated
- Glyceryl trinitrate pr + Vardenafil Contraindicated
- Isosorbide dinitrate + Vardenafil Contraindicated
- Isosorbide mononitrate + Vardenafil Contraindicated
- Nicorandil + Vardenafil Contraindicated
- Nitroglycerin po + Vardenafil Contraindicated
Other interactions of Riociguat
- Avanafil + Riociguat Contraindicated
- Dipyridamole + Riociguat Contraindicated
- Isosorbide dinitrate + Riociguat Contraindicated
- Isosorbide mononitrate + Riociguat Contraindicated
- Nitroglycerin + Riociguat Contraindicated
- Riociguat + Sildenafil Contraindicated
Frequently asked questions
Can I take Riociguat with Vardenafil?
MediHelp rates the interaction as contraindicated. Riociguat and Vardenafil 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 stimulates soluble guanylate cyclase and vardenafil prevents cGMP degradation, which together produce severe additive hypotension. Labeling prohibits PDE5 inhibitors with riociguat.
How serious is the interaction between Riociguat and Vardenafil?
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 combine. Use a different treatment for erectile dysfunction in patients on riociguat.
What other medicines interact with Vardenafil?
MediHelp also lists interactions of Vardenafil with, for example, Amyl nitrite, Glyceryl trinitrate pr, Isosorbide dinitrate. The full list is on the Vardenafil page.
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