Drug interactions
Buprenorphine + Vardenafil
Severity: Moderate
Buprenorphine and Vardenafil: 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
Buprenorphine can prolong the QT interval, particularly at higher doses or with the transdermal formulation, and vardenafil has a modest QT effect. Together they may add to arrhythmia risk in susceptible patients.
What this interaction means in plain words
Buprenorphine and Vardenafil 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.
Buprenorphine belongs to Musculoskeletal; Vardenafil belongs to Genitourinary.
Why it happens
Additive QTc prolongation.
What to do
Obtain a baseline ECG in patients with QT risk factors and monitor QTc and electrolytes. Avoid high buprenorphine doses where possible.
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?
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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 Buprenorphine
- Alvimopan + Buprenorphine Contraindicated
- Buprenorphine + Calcium / magnesium / potassium / sodium oxybates Contraindicated
- Buprenorphine + Olanzapine / samidorphan Contraindicated
- Buprenorphine + Phenelzine Contraindicated
- Buprenorphine + Pimozide Contraindicated
- Buprenorphine + Thioridazine Contraindicated
Frequently asked questions
Can I take Buprenorphine with Vardenafil?
MediHelp rates the interaction as moderate. Buprenorphine and Vardenafil 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. Buprenorphine can prolong the QT interval, particularly at higher doses or with the transdermal formulation, and vardenafil has a modest QT effect. Together they may add to arrhythmia risk in susceptible patients.
How serious is the interaction between Buprenorphine and Vardenafil?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG in patients with QT risk factors and monitor QTc and electrolytes. Avoid high buprenorphine doses where possible.
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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