Drug interactions
Avapritinib + Methocarbamol
Severity: Moderate
Avapritinib 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
Avapritinib can cause cognitive effects, dizziness and somnolence. Methocarbamol may add to sedation and make cognitive impairment more pronounced.
What this interaction means in plain words
Avapritinib 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.
Avapritinib belongs to Oncology; Methocarbamol belongs to Musculoskeletal.
Why it happens
Additive CNS effects; avapritinib's cognitive toxicity mechanism is not fully established.
What to do
Monitor cognition and alertness, and counsel patients on driving. Reduce or stop methocarbamol if cognitive or sedative effects appear.
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 Avapritinib
Frequently asked questions
Can I take Avapritinib with Methocarbamol?
MediHelp rates the interaction as moderate. Avapritinib 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. Avapritinib can cause cognitive effects, dizziness and somnolence. Methocarbamol may add to sedation and make cognitive impairment more pronounced.
How serious is the interaction between Avapritinib 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 cognition and alertness, and counsel patients on driving. Reduce or stop methocarbamol if cognitive or sedative effects appear.
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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