Drug interactions
Difelikefalin + Methocarbamol
Severity: Moderate
Difelikefalin and Methocarbamol: 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 is a peripherally restricted kappa-opioid agonist that can cause somnolence and dizziness. Combined with sedating methocarbamol, drowsiness and dizziness may be increased, with a higher risk of falls.
What this interaction means in plain words
Difelikefalin and Methocarbamol 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; Methocarbamol belongs to Musculoskeletal.
Why it happens
Additive sedative and CNS effects of two drugs with central depressant or somnolence-producing activity.
What to do
Monitor for excessive drowsiness, dizziness and falls, particularly in dialysis patients. Reduce methocarbamol dose if sedation 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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Difelikefalin and Methocarbamol, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Methocarbamol
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 Methocarbamol?
MediHelp rates the interaction as moderate. Difelikefalin and Methocarbamol 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 is a peripherally restricted kappa-opioid agonist that can cause somnolence and dizziness. Combined with sedating methocarbamol, drowsiness and dizziness may be increased, with a higher risk of falls.
How serious is the interaction between Difelikefalin and Methocarbamol?
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 excessive drowsiness, dizziness and falls, particularly in dialysis patients. Reduce methocarbamol dose if sedation occurs.
What other medicines interact with Methocarbamol?
MediHelp also lists interactions of Methocarbamol with, for example, Alfentanil, Amobarbital, Belladonna and opium. The full list is on the Methocarbamol page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
