Clinical trial Recruiting at 28 sites Phase 3 Interventional Ages 18 to 65

NMDA and Sigma-1 combination therapy for smoking cessation with AXS-05

Official title: A Randomized, Double-Blind, Placebo and Active-Controlled Trial to Evaluate the Efficacy and Safety of AXS-05 for Smoking Cessation in Adults

Run by Axsome Therapeutics, Inc. · NCT07766655 · Data updated 2026-11-12

This phase 3 trial tests whether AXS-05 can help adults quit smoking better than placebo or bupropion.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years to 65 Years
SexAll
Enrollment705 (estimated)
SponsorAxsome Therapeutics, Inc.
Industry-sponsored
Locations28 sites (Phoenix, Arizona and 27 other locations)
StatusRecruiting
StartedAugust 27, 2026
Main results expectedDecember 2027
Study endsDecember 2027
Registry record updatedNovember 6, 2026
Trial IDNCT07766655 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18 to 65 who smoke and are eligible per protocol.

Probably not a fit

Some participants may not experience increased quitting success or may experience side effects.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a multicenter, randomized, double-blind study that compares AXS-05 to placebo and to bupropion over 12 weeks, followed by an 18-week observation period. Participants are assigned in a 1:1:1 ratio and will be monitored for safety and quitting outcomes. The trial aims to determine if the AXS-05 combination improves cessation rates and tolerability in adults who smoke. The study uses a parallel-group design with active and placebo controls to provide robust efficacy data. Locations include sites in Phoenix, Little Rock, and Lemon Grove.

Why it matters

Potential benefit: If successful, participants may have a higher chance of quitting smoking with an effective, tolerable treatment.

How similar studies have gone: Previous similar approaches have shown promise, but this specific three-arm comparison in smoking cessation is being evaluated.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male or female, aged 18 to 65 (inclusive)

Exclusion Criteria:

* Unable to comply with study procedures.
* Medically inappropriate for study participation in the opinion of the investigator.

Where it's running

  • Clinical Research Site
    Phoenix, Arizona, United States
    Recruiting
  • Clinical Research Site
    Little Rock, Arkansas, United States
    Recruiting
  • Clinical Research Site
    Lemon Grove, California, United States
    Recruiting
  • Clinical Research Site
    Long Beach, California, United States
    Recruiting
  • Clinical Research Site
    Pomona, California, United States
    Recruiting
  • Clinical Research Site
    DeLand, Florida, United States
    Recruiting
Show 22 more locations
  • Clinical Research Site
    Jacksonville, Florida, United States
    Recruiting
  • Clinical Research Site
    Orlando, Florida, United States
    Recruiting
  • Clinical Research Site
    Tampa, Florida, United States
    Recruiting
  • Clinical Research Site
    Columbus, Georgia, United States
    Recruiting
  • Clinical Research Site
    Stockbridge, Georgia, United States
    Recruiting
  • Clinical Research Site
    Skokie, Illinois, United States
    Recruiting
  • Clinical Research Site
    Evansville, Indiana, United States
    Recruiting
  • Clinical Research Site
    Kansas City, Missouri, United States
    Recruiting
  • Clinical Research Site
    Brooklyn, New York, United States
    Recruiting
  • Clinical Research Site
    Brooklyn, New York, United States
    Recruiting
  • Clinical Research Site
    Rochester, New York, United States
    Recruiting
  • Clinical Research Site
    Mount Airy, North Carolina, United States
    Recruiting
  • Clinical Research Site
    Duncansville, Pennsylvania, United States
    Recruiting
  • Clinical Research Site
    North Charleston, South Carolina, United States
    Recruiting
  • Clinical Research Site
    Knoxville, Tennessee, United States
    Recruiting
  • Clinical Research Site
    Memphis, Tennessee, United States
    Recruiting
  • Clinical Research Site
    Nashville, Tennessee, United States
    Recruiting
  • Clinical Research Site
    Austin, Texas, United States
    Recruiting
  • Clinical Research Site
    Dallas, Texas, United States
    Recruiting
  • Clinical Research Site
    Fort Worth, Texas, United States
    Recruiting
  • Clinical Research Site
    Huston, Texas, United States
    Recruiting
  • Clinical Research Site
    Newport News, Virginia, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.