Drug interactions
Orphenadrine + Oxazepam
Severity: Moderate
Orphenadrine and Oxazepam: 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 with sedative effects. With oxazepam it may cause additive drowsiness, confusion and impaired coordination, especially in older adults.
What this interaction means in plain words
Orphenadrine and Oxazepam 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, with added anticholinergic cognitive effects from orphenadrine.
What to do
Use the lowest effective doses and monitor for oversedation and confusion. Avoid or limit the combination in elderly patients and advise 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 Oxazepam
- Calcium / magnesium / potassium / sodium oxybates + Oxazepam Contraindicated
- Oxazepam + Sodium oxybate Contraindicated
- Alfentanil + Oxazepam Major
- Amobarbital + Oxazepam Major
- Baclofen + Oxazepam Major
- Belladonna and opium + Oxazepam Major
Frequently asked questions
Can I take Orphenadrine with Oxazepam?
MediHelp rates the interaction as moderate. Orphenadrine and Oxazepam 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 with sedative effects. With oxazepam it may cause additive drowsiness, confusion and impaired coordination, especially in older adults.
How serious is the interaction between Orphenadrine and Oxazepam?
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 and monitor for oversedation and confusion. Avoid or limit the combination in elderly patients and advise against driving.
What other medicines interact with Oxazepam?
MediHelp also lists interactions of Oxazepam with, for example, Calcium / magnesium / potassium / sodium oxybates, Sodium oxybate, Alfentanil. The full list is on the Oxazepam page.
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