Drug interactions
Brexanolone + Methocarbamol
Severity: Major
Brexanolone and Methocarbamol: major 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
Brexanolone infusion commonly causes excessive sedation and may cause sudden loss of consciousness. Methocarbamol may add to this CNS depression.
What this interaction means in plain words
Brexanolone and Methocarbamol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive CNS depression; brexanolone is a positive allosteric modulator of GABA-A receptors.
What to do
Monitor sedation and oxygen saturation continuously during infusion, and hold methocarbamol around the infusion. Reduce or interrupt brexanolone per labeling if excessive sedation occurs.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Brexanolone 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 14 days on the web. No card needed.
Other interactions of Methocarbamol
Frequently asked questions
Can I take Brexanolone with Methocarbamol?
MediHelp rates the interaction as major. Brexanolone and Methocarbamol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Brexanolone infusion commonly causes excessive sedation and may cause sudden loss of consciousness. Methocarbamol may add to this CNS depression.
How serious is the interaction between Brexanolone and Methocarbamol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor sedation and oxygen saturation continuously during infusion, and hold methocarbamol around the infusion. Reduce or interrupt brexanolone per labeling if excessive 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.
