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Drug interactions

Baclofen + Methohexital

Severity: Moderate

Baclofen and Methohexital: 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

Methohexital is a short-acting barbiturate anesthetic, and baclofen can add to its sedative and respiratory depressant effects. This may deepen sedation or prolong recovery.

What this interaction means in plain words

Baclofen and Methohexital 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.

Baclofen belongs to Musculoskeletal; Methohexital belongs to Central Nervous System.

Evidence level: Low

Why it happens

Additive CNS depression through GABA-A enhancement by the barbiturate and GABA-B agonism by baclofen.

What to do

Tell the anesthesia team about baclofen use before procedures and titrate methohexital carefully. Provide airway and respiratory monitoring, and continue baclofen perioperatively to avoid withdrawal unless the anesthesiologist advises otherwise.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Baclofen with Methohexital?

MediHelp rates the interaction as moderate. Baclofen and Methohexital 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. Methohexital is a short-acting barbiturate anesthetic, and baclofen can add to its sedative and respiratory depressant effects. This may deepen sedation or prolong recovery.

How serious is the interaction between Baclofen and Methohexital?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Tell the anesthesia team about baclofen use before procedures and titrate methohexital carefully. Provide airway and respiratory monitoring, and continue baclofen perioperatively to avoid withdrawal unless the anesthesiologist advises otherwise.

What other medicines interact with Baclofen?

MediHelp also lists interactions of Baclofen with, for example, Alfentanil, Amobarbital, Belladonna and opium. The full list is on the Baclofen page.

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