Drug interactions
Marijuana + Methocarbamol
Severity: Moderate
Marijuana 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
Cannabis produces drowsiness, dizziness and impaired coordination, and methocarbamol has similar effects. Using them together can increase impairment and the risk of falls or accidents.
What this interaction means in plain words
Marijuana 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.
Why it happens
Additive CNS depression from cannabinoid effects and centrally acting muscle relaxation.
What to do
Advise patients to avoid driving and hazardous activities and to limit cannabis use while taking methocarbamol. Monitor for sedation and dizziness, especially in older adults.
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 Methocarbamol
Frequently asked questions
Can I take Marijuana with Methocarbamol?
MediHelp rates the interaction as moderate. Marijuana 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. Cannabis produces drowsiness, dizziness and impaired coordination, and methocarbamol has similar effects. Using them together can increase impairment and the risk of falls or accidents.
How serious is the interaction between Marijuana 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: Advise patients to avoid driving and hazardous activities and to limit cannabis use while taking methocarbamol. Monitor for sedation and dizziness, especially in older adults.
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.
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