Drug interactions
Orphenadrine + Tapentadol
Severity: Moderate
Orphenadrine and Tapentadol: 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 a sedating anticholinergic muscle relaxant that can add to opioid-induced drowsiness and impaired psychomotor performance. Anticholinergic effects such as constipation and urinary retention may also be worsened.
What this interaction means in plain words
Orphenadrine and Tapentadol 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 and additive anticholinergic effects on gut and bladder.
What to do
Use the lowest effective doses and monitor for excessive sedation, confusion, constipation and urinary retention. Take particular care in elderly patients.
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 Tapentadol
- Calcium / magnesium / potassium / sodium oxybates + Tapentadol Contraindicated
- Isocarboxazid + Tapentadol Contraindicated
- Linezolid + Tapentadol Contraindicated
- Methylene blue + Tapentadol Contraindicated
- Olanzapine / samidorphan + Tapentadol Contraindicated
- Phenelzine + Tapentadol Contraindicated
Frequently asked questions
Can I take Orphenadrine with Tapentadol?
MediHelp rates the interaction as moderate. Orphenadrine and Tapentadol 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 a sedating anticholinergic muscle relaxant that can add to opioid-induced drowsiness and impaired psychomotor performance. Anticholinergic effects such as constipation and urinary retention may also be worsened.
How serious is the interaction between Orphenadrine and Tapentadol?
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 excessive sedation, confusion, constipation and urinary retention. Take particular care in elderly patients.
What other medicines interact with Tapentadol?
MediHelp also lists interactions of Tapentadol with, for example, Calcium / magnesium / potassium / sodium oxybates, Isocarboxazid, Linezolid. The full list is on the Tapentadol page.
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