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Ketamine and Benzodiazepines

Benzodiazepines can blunt ketamine's antidepressant effect.

Written by: Ira ZootMedical review status: Not yet clinically reviewed.Last updated: June 6, 2026Evidence: Andrashko 2020; Albott 2017

This page has been written and edited by the publisher. It has not been reviewed by a licensed clinician.

Quick answer
Do benzodiazepines interfere with ketamine?
Multiple studies suggest concurrent benzodiazepine use is associated with diminished antidepressant response to ketamine. Many clinicians ask patients to hold benzodiazepines the day of session — never abruptly discontinue without medical guidance.

Why it matters

Benzodiazepines act on GABA inhibitory signaling, which may dampen the glutamate surge thought to underlie ketamine's plasticity effects.

What clinicians often do

  • Ask patients to skip the morning benzodiazepine dose on session day (when safe).
  • Consider tapering long-term benzodiazepines, slowly, in coordination with the prescribing physician.
  • Never advise abrupt discontinuation — benzodiazepine withdrawal can be dangerous.

Related reading

Educational content only. Not medical advice. Discuss any treatment decisions with a qualified clinician.

About the author

Publisher and editor of Ketalux, based in Chicago, Illinois. Ira is a ketamine therapy patient, not a clinician. This is editorial review, not medical review: Ira is not a licensed clinician and does not provide diagnosis or medical care. Ketalux does not accept compensation from providers in exchange for favorable editorial coverage, evidence ratings, recommendations, patient referrals, or organic provider ranking. Read the full publisher disclosure →

Educational use only. The content on this page is provided for general educational purposes and does not constitute medical advice, diagnosis, or treatment. Ketamine and related therapies carry risks and are appropriate only under qualified medical supervision. Always consult a licensed healthcare professional about your individual situation. Information may change as research evolves.