Comparing ketamine and placebo for chronic pain and depression under sedation

Randomized, Double-blind, Placebo-controlled, Single-center, Noninferiority Trial of Ketamine Given During Sedation to Patients With Chronic Pain and Depression

Phase 4 Interventional Stanford University · NCT06317636

This study is testing if ketamine can help people with chronic pain and depression feel better while they are sedated, compared to a placebo.

Quick facts

PhasePhase 4
Study typeInterventional
Enrollment40 (estimated)
Ages18 Years to 70 Years
SexAll
SponsorStanford University Academic / other
Locations1 site (Stanford, California)
Trial IDNCT06317636 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to evaluate the effectiveness of ketamine compared to a placebo in treating chronic pain and depression during intravenous sedation with propofol. Participants will be randomly assigned to receive either ketamine or saline while under sedation, allowing for a blinded assessment of treatment effects. The study will also assess the safety of propofol sedation and explore how patient expectations may influence outcomes. A pilot phase will precede a larger randomized controlled trial to ensure feasibility and refine methodologies.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 to 70 with chronic pain lasting at least three months and currently experiencing depression.

Not a fit: Patients who are pregnant, breastfeeding, or have health conditions that make participation unsafe will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide insights into effective treatments for patients suffering from chronic pain and depression.

How similar studies have performed: While ketamine has shown promise in treating depression and pain, this specific approach under propofol sedation is novel and has not been extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18 to 70 years old
* Comfortable speaking and writing in English
* Chronic pain present daily for at least 3 months
* Currently experiencing depression
* Able to comply with the study protocol and communicate with study personnel about adverse events and other clinically important information

Exclusion Criteria:

* Pregnant or breastfeeding
* One or more health conditions that makes study unsafe or unfeasible, determined by study physicians
* Regular use of medications that may have problematic interactions with the study drugs
* Participating in another clinical trial which may conflict with this one

Where this trial is running

Stanford, California

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Chronic PainDepressionKetaminePropofolSedationPsychotropic DrugsHypnotics and SedativesDissociative Anesthetics
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.