Drug interactions
Methocarbamol + Quetiapine
Severity: Moderate
Methocarbamol and Quetiapine: 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
Quetiapine is markedly sedating through histamine and alpha-1 blockade, and methocarbamol adds central depression. This may result in excess drowsiness, dizziness and orthostatic hypotension.
What this interaction means in plain words
Methocarbamol and Quetiapine 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.
Methocarbamol belongs to Musculoskeletal; Quetiapine belongs to Central Nervous System.
Why it happens
Additive central nervous system depression through pharmacodynamic synergism.
What to do
Monitor for sedation and orthostatic symptoms, particularly in older adults. Counsel patients about driving and fall precautions.
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
Other interactions of Quetiapine
- Adagrasib + Quetiapine Major
- Amiodarone + Quetiapine Major
- Amisulpride + Quetiapine Major
- Amoxapine + Quetiapine Major
- Anagrelide + Quetiapine Major
- Apalutamide + Quetiapine Major
Frequently asked questions
Can I take Methocarbamol with Quetiapine?
MediHelp rates the interaction as moderate. Methocarbamol and Quetiapine 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. Quetiapine is markedly sedating through histamine and alpha-1 blockade, and methocarbamol adds central depression. This may result in excess drowsiness, dizziness and orthostatic hypotension.
How serious is the interaction between Methocarbamol and Quetiapine?
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 sedation and orthostatic symptoms, particularly in older adults. Counsel patients about driving and fall precautions.
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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