Drug interactions
Lofexidine + Orphenadrine
Severity: Moderate
Lofexidine and Orphenadrine: 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
Orphenadrine is an anticholinergic muscle relaxant that causes drowsiness and dizziness. Together with lofexidine it can increase sedation and impair alertness.
What this interaction means in plain words
Lofexidine and Orphenadrine 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 through alpha-2 agonism and central anticholinergic/antihistaminic effects.
What to do
Monitor for oversedation and dizziness and consider lowering the orphenadrine dose. Counsel patients against driving.
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 Orphenadrine?
MediHelp rates the interaction as moderate. Lofexidine and Orphenadrine 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. Orphenadrine is an anticholinergic muscle relaxant that causes drowsiness and dizziness. Together with lofexidine it can increase sedation and impair alertness.
How serious is the interaction between Lofexidine and Orphenadrine?
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 for oversedation and dizziness and consider lowering the orphenadrine dose. Counsel patients against driving.
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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