Drug interactions
Ketamine + Methocarbamol
Severity: Moderate
Ketamine 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
Ketamine is an anesthetic and dissociative agent with CNS depressant effects, and methocarbamol adds sedation. The combination may deepen sedation and impair airway reflexes or coordination, especially in procedural settings.
What this interaction means in plain words
Ketamine 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.
Ketamine belongs to Central Nervous System; Methocarbamol belongs to Musculoskeletal.
Why it happens
Additive CNS depression from an NMDA antagonist anesthetic and a centrally acting muscle relaxant.
What to do
Monitor level of consciousness, respiration and oxygenation when ketamine is given to patients taking methocarbamol. Reduce ketamine dosing if heavy 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?
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Other interactions of Methocarbamol
Other interactions of Ketamine
Frequently asked questions
Can I take Ketamine with Methocarbamol?
MediHelp rates the interaction as moderate. Ketamine 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. Ketamine is an anesthetic and dissociative agent with CNS depressant effects, and methocarbamol adds sedation. The combination may deepen sedation and impair airway reflexes or coordination, especially in procedural settings.
How serious is the interaction between Ketamine 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 level of consciousness, respiration and oxygenation when ketamine is given to patients taking methocarbamol. Reduce ketamine dosing if heavy 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.
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