Drug interactions
Diazepam + Methohexital
Severity: Moderate
Diazepam 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
Both drugs are CNS depressants acting at the GABA-A receptor, and together they intensify sedation, hypotension and respiratory depression. The effect is relevant in procedural sedation and anesthesia.
What this interaction means in plain words
Diazepam 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.
Diazepam belongs to Musculoskeletal; Methohexital belongs to Central Nervous System.
Why it happens
Additive GABA-A mediated CNS and respiratory depression.
What to do
Reduce the methohexital dose and titrate to effect. Use continuous monitoring of oxygenation and ventilation with airway equipment available.
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 Diazepam
Other interactions of Methohexital
Frequently asked questions
Can I take Diazepam with Methohexital?
MediHelp rates the interaction as moderate. Diazepam 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. Both drugs are CNS depressants acting at the GABA-A receptor, and together they intensify sedation, hypotension and respiratory depression. The effect is relevant in procedural sedation and anesthesia.
How serious is the interaction between Diazepam 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: Reduce the methohexital dose and titrate to effect. Use continuous monitoring of oxygenation and ventilation with airway equipment available.
What other medicines interact with Diazepam?
MediHelp also lists interactions of Diazepam with, for example, Calcium / magnesium / potassium / sodium oxybates, Alfentanil, Alprazolam. The full list is on the Diazepam page.
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