Drug interactions
Orphenadrine + Paliperidone
Severity: Moderate
Orphenadrine and Paliperidone: 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 has sedative and anticholinergic effects that add to those of paliperidone, which can cause drowsiness, confusion, constipation, urinary retention and tachycardia. Older patients are most vulnerable.
What this interaction means in plain words
Orphenadrine and Paliperidone 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 muscarinic receptor blockade.
What to do
Monitor for oversedation and anticholinergic effects and use the lowest effective orphenadrine dose. Counsel against driving if drowsy.
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 Paliperidone
- Ibutilide + Paliperidone Contraindicated
- Paliperidone + Pimozide Contraindicated
- Paliperidone + Vandetanib Contraindicated
- Adagrasib + Paliperidone Major
- Amiodarone + Paliperidone Major
- Amisulpride + Paliperidone Major
Frequently asked questions
Can I take Orphenadrine with Paliperidone?
MediHelp rates the interaction as moderate. Orphenadrine and Paliperidone 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 has sedative and anticholinergic effects that add to those of paliperidone, which can cause drowsiness, confusion, constipation, urinary retention and tachycardia. Older patients are most vulnerable.
How serious is the interaction between Orphenadrine and Paliperidone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for oversedation and anticholinergic effects and use the lowest effective orphenadrine dose. Counsel against driving if drowsy.
What other medicines interact with Paliperidone?
MediHelp also lists interactions of Paliperidone with, for example, Ibutilide, Pimozide, Vandetanib. The full list is on the Paliperidone page.
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