Drug interactions
Chlordiazepoxide + Orphenadrin
Severity: Moderate
Chlordiazepoxide and Orphenadrin: 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
Chlordiazepoxide is a long-acting benzodiazepine, and orphenadrine contributes additional sedation. Together they can cause pronounced drowsiness, psychomotor impairment and confusion, and increase fall risk.
What this interaction means in plain words
Chlordiazepoxide and Orphenadrin 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.
Chlordiazepoxide belongs to Central Nervous System; Orphenadrin belongs to Musculoskeletal.
Why it happens
Additive central nervous system depression via GABA-A enhancement and central antihistaminic/anticholinergic effects.
What to do
Use the lowest effective doses for the shortest duration and monitor for oversedation. Take particular care in elderly patients and those with respiratory disease.
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 Orphenadrin
Other interactions of Chlordiazepoxide
Frequently asked questions
Can I take Chlordiazepoxide with Orphenadrin?
MediHelp rates the interaction as moderate. Chlordiazepoxide and Orphenadrin 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. Chlordiazepoxide is a long-acting benzodiazepine, and orphenadrine contributes additional sedation. Together they can cause pronounced drowsiness, psychomotor impairment and confusion, and increase fall risk.
How serious is the interaction between Chlordiazepoxide and Orphenadrin?
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 the lowest effective doses for the shortest duration and monitor for oversedation. Take particular care in elderly patients and those with respiratory disease.
What other medicines interact with Orphenadrin?
MediHelp also lists interactions of Orphenadrin with, for example, Alfentanil, Amobarbital, Benzhydrocodone / acetaminophen. The full list is on the Orphenadrin page.
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