Just Healthcare

Just Healthcare

Ketamine Antidepressant Effects May Rely on Opioid System

New research suggests ketamine’s rapid mood-lifting benefits could be linked to opioid receptor activity in the brain.

Naveen Sankar S's avatar
Naveen Sankar S
Sep 06, 2025
∙ Paid
Share
Generated image

A small randomized trial found that blocking the opioid system with naltrexone weakened ketamine’s antidepressant effects and blunted brain glutamate activity, suggesting the opioid system may play a role in ketamine’s rapid mood benefits.

Study Details

Ketamine has gained attention as a rapid-acting antidepressant for treatment-resistant depression. Trad…

Keep reading with a 7-day free trial

Subscribe to Just Healthcare to keep reading this post and get 7 days of free access to the full post archives.

Already a paid subscriber? Sign in
© 2025 Just Healthcare
Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture