Drug interactions
Buprenorphine transdermal + Loperamide
Severity: Moderate
Buprenorphine transdermal and Loperamide: 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
Both agents can prolong the QT interval, and transdermal buprenorphine carries a QT warning. Combination may raise arrhythmia risk particularly with high loperamide doses.
What this interaction means in plain words
Buprenorphine transdermal and Loperamide 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 and additive opioid effects on gut motility.
What to do
Use only labeled doses of loperamide and check ECG in at-risk patients. Correct electrolyte disturbances.
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 Loperamide
Frequently asked questions
Can I take Buprenorphine transdermal with Loperamide?
MediHelp rates the interaction as moderate. Buprenorphine transdermal and Loperamide 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. Both agents can prolong the QT interval, and transdermal buprenorphine carries a QT warning. Combination may raise arrhythmia risk particularly with high loperamide doses.
How serious is the interaction between Buprenorphine transdermal and Loperamide?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use only labeled doses of loperamide and check ECG in at-risk patients. Correct electrolyte disturbances.
What other medicines interact with Loperamide?
MediHelp also lists interactions of Loperamide with, for example, Amiodarone, Amisulpride, Anagrelide. The full list is on the Loperamide page.
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