Drug interactions
Meclizine + Orphenadrin
Severity: Moderate
Meclizine 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
Meclizine is a sedating antihistamine with anticholinergic properties, and orphenadrine adds to both effects. This may cause drowsiness, dry mouth, blurred vision, confusion and urinary retention.
What this interaction means in plain words
Meclizine 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.
Meclizine belongs to Respiratory; Orphenadrin belongs to Musculoskeletal.
Why it happens
Additive central H1-antagonism and antimuscarinic effects.
What to do
Avoid in older adults where possible, and counsel about sedation and driving. Monitor for anticholinergic symptoms.
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 Meclizine
Frequently asked questions
Can I take Meclizine with Orphenadrin?
MediHelp rates the interaction as moderate. Meclizine 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. Meclizine is a sedating antihistamine with anticholinergic properties, and orphenadrine adds to both effects. This may cause drowsiness, dry mouth, blurred vision, confusion and urinary retention.
How serious is the interaction between Meclizine 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 in older adults where possible, and counsel about sedation and driving. Monitor for anticholinergic symptoms.
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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