Drug interactions
Difelikefalin + Orphenadrin
Severity: Moderate
Difelikefalin 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
Difelikefalin can cause somnolence and dizziness, and orphenadrine may add to these CNS effects. Combined use may impair alertness and increase fall risk.
What this interaction means in plain words
Difelikefalin 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.
Difelikefalin belongs to Dermatology; Orphenadrin belongs to Musculoskeletal.
Why it happens
Additive CNS depressant effects.
What to do
Monitor for drowsiness and dizziness, particularly in dialysis patients. Reduce doses if oversedation occurs.
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 Difelikefalin
- Acetazolamide + Difelikefalin Moderate
- Alprazolam + Difelikefalin Moderate
- Amantadine + Difelikefalin Moderate
- Amitriptyline + Difelikefalin Moderate
- Amobarbital + Difelikefalin Moderate
- Asenapine + Difelikefalin Moderate
Frequently asked questions
Can I take Difelikefalin with Orphenadrin?
MediHelp rates the interaction as moderate. Difelikefalin 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. Difelikefalin can cause somnolence and dizziness, and orphenadrine may add to these CNS effects. Combined use may impair alertness and increase fall risk.
How serious is the interaction between Difelikefalin 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: Monitor for drowsiness and dizziness, particularly in dialysis patients. Reduce doses if oversedation occurs.
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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