Drug interactions
Buprenorphine long-acting + Lofexidine
Severity: Moderate
Buprenorphine long-acting and Lofexidine: 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 drugs can prolong the QT interval and lower heart rate and blood pressure. Combined use may increase the risk of torsades de pointes and symptomatic hypotension, and buprenorphine exposure persists for weeks after an injection.
What this interaction means in plain words
Buprenorphine long-acting and Lofexidine 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 hypotensive effects.
What to do
Monitor ECG, heart rate and blood pressure while lofexidine is used. Correct electrolyte abnormalities and avoid adding other QT-prolonging drugs.
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 Lofexidine
- Adagrasib + Lofexidine Major
- Alfuzosin + Lofexidine Major
- Amiodarone + Lofexidine Major
- Amisulpride + Lofexidine Major
- Anagrelide + Lofexidine Major
- Apomorphine + Lofexidine Major
Frequently asked questions
Can I take Buprenorphine long-acting with Lofexidine?
MediHelp rates the interaction as moderate. Buprenorphine long-acting and Lofexidine 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 drugs can prolong the QT interval and lower heart rate and blood pressure. Combined use may increase the risk of torsades de pointes and symptomatic hypotension, and buprenorphine exposure persists for weeks after an injection.
How serious is the interaction between Buprenorphine long-acting and Lofexidine?
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, heart rate and blood pressure while lofexidine is used. Correct electrolyte abnormalities and avoid adding other QT-prolonging drugs.
What other medicines interact with Lofexidine?
MediHelp also lists interactions of Lofexidine with, for example, Adagrasib, Alfuzosin, Amiodarone. The full list is on the Lofexidine page.
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