Drug interactions
Diazepam + Ketamine
Severity: Moderate
Diazepam and Ketamine: 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
Concurrent use increases sedation and may add to respiratory and cardiovascular effects. Benzodiazepines are sometimes given deliberately with ketamine to reduce emergence reactions.
What this interaction means in plain words
Diazepam and Ketamine 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; Ketamine belongs to Central Nervous System.
Why it happens
Additive CNS depression via GABA-A potentiation and NMDA antagonism.
What to do
Titrate doses carefully and monitor oxygen saturation, respiration and hemodynamics, with airway equipment available during procedural use.
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 Ketamine
Frequently asked questions
Can I take Diazepam with Ketamine?
MediHelp rates the interaction as moderate. Diazepam and Ketamine 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. Concurrent use increases sedation and may add to respiratory and cardiovascular effects. Benzodiazepines are sometimes given deliberately with ketamine to reduce emergence reactions.
How serious is the interaction between Diazepam and Ketamine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Titrate doses carefully and monitor oxygen saturation, respiration and hemodynamics, with airway equipment available during procedural use.
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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