Drug interactions
Lofexidine + Pentobarbital
Severity: Moderate
Lofexidine and Pentobarbital: 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
Pentobarbital is a barbiturate with strong CNS depressant effects, and lofexidine is also sedating and lowers blood pressure. Combined use can cause marked drowsiness, hypotension and, at higher doses, respiratory depression.
What this interaction means in plain words
Lofexidine and Pentobarbital 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 CNS depression from enhanced GABA-A activity and alpha-2 agonism.
What to do
Monitor sedation level, blood pressure and respiration, and use the lowest effective barbiturate dose. Avoid driving and hazardous tasks.
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 Lofexidine with Pentobarbital?
MediHelp rates the interaction as moderate. Lofexidine and Pentobarbital 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. Pentobarbital is a barbiturate with strong CNS depressant effects, and lofexidine is also sedating and lowers blood pressure. Combined use can cause marked drowsiness, hypotension and, at higher doses, respiratory depression.
How serious is the interaction between Lofexidine and Pentobarbital?
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 sedation level, blood pressure and respiration, and use the lowest effective barbiturate dose. Avoid driving and hazardous tasks.
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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