Drug interactions
Methocarbamol + Orphenadrin
Severity: Moderate
Methocarbamol 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
Both agents are centrally acting muscle relaxants with sedative properties, and orphenadrine is also anticholinergic. Combined use can cause marked drowsiness, dizziness and reduced coordination. Duplicating muscle relaxants generally adds little benefit.
What this interaction means in plain words
Methocarbamol 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.
Methocarbamol belongs to Musculoskeletal; Orphenadrin belongs to Musculoskeletal.
Why it happens
Additive central nervous system depressant effects.
What to do
Avoid using two muscle relaxants together when possible. If both are used, monitor for oversedation and warn the patient about driving and operating machinery.
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 Methocarbamol
Frequently asked questions
Can I take Methocarbamol with Orphenadrin?
MediHelp rates the interaction as moderate. Methocarbamol 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. Both agents are centrally acting muscle relaxants with sedative properties, and orphenadrine is also anticholinergic. Combined use can cause marked drowsiness, dizziness and reduced coordination. Duplicating muscle relaxants generally adds little benefit.
How serious is the interaction between Methocarbamol 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: Avoid using two muscle relaxants together when possible. If both are used, monitor for oversedation and warn the patient about driving and operating machinery.
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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