Drug interactions
Buprenorphine buccal + Solifenacin
Severity: Moderate
Buprenorphine buccal and Solifenacin: 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, with buccal formulations carrying a labeled warning. Solifenacin adds a further QT effect, and both can cause constipation and urinary retention.
What this interaction means in plain words
Buprenorphine buccal and Solifenacin 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.
Why it happens
Additive QT prolongation, with additive anticholinergic and opioid effects on bowel and bladder function.
What to do
Monitor ECG in patients with QT risk factors and watch for urinary retention and constipation. Consider an alternative bladder agent if QT risk is high.
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 Solifenacin
Frequently asked questions
Can I take Buprenorphine buccal with Solifenacin?
MediHelp rates the interaction as moderate. Buprenorphine buccal and Solifenacin 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, with buccal formulations carrying a labeled warning. Solifenacin adds a further QT effect, and both can cause constipation and urinary retention.
How serious is the interaction between Buprenorphine buccal and Solifenacin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor ECG in patients with QT risk factors and watch for urinary retention and constipation. Consider an alternative bladder agent if QT risk is high.
What other medicines interact with Solifenacin?
MediHelp also lists interactions of Solifenacin with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Solifenacin page.
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