Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 18 and up

Optimizing the number of MDMA-assisted therapy cycles for veterans with PTSD

Official title: A Dose Optimization Study of MDMA-Assisted Therapy for PTSD in U.S. Veterans

Run by Bronx VA Medical Center · NCT06418178 · Data updated 2026-11-12

This program will try one to five cycles of MDMA-assisted therapy to see which number of cycles helps U.S. veterans with PTSD the most.

More Posttraumatic Stress Disorder trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment60 (estimated)
SponsorBronx VA Medical Center
Federal
Locations1 site (The Bronx, New York)
StatusRecruiting
StartedJune 3, 2025
Main results expectedOctober 2029
Study endsOctober 2029
Registry record updatedOctober 8, 2026
Trial IDNCT06418178 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are U.S. military veterans age 18 or older with a current PTSD diagnosis who can give written informed consent, swallow pills, commit to therapy dosing and multiple in-person sessions, and are not enrolled in other interventional trials.

Probably not a fit

Those unable to provide informed consent, with disqualifying medical or psychiatric conditions, or unwilling or unable to attend lengthy in-person sessions are unlikely to benefit from participation.

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

What this trial studies

This open-label, within-subjects Phase 2 trial enrolls U.S. military veterans with PTSD to determine the optimal number of MDMA-assisted therapy cycles. All participants receive three preparatory psychotherapy sessions, then at least one cycle consisting of one approximately eight-hour MDMA session with a two-therapist team followed by three 90-minute integration sessions, and they may continue up to five cycles. After each cycle, the participant and therapy team decide whether to continue based on symptom change, tolerability, and participant burden. Blood samples will be banked for future biomarker analyses and the design allows evaluation of both clinical response and tolerability across multiple cycles.

Why it matters

Potential benefit: If successful, the study could identify how many MDMA-AT cycles produce the best symptom relief while minimizing burden and side effects for veterans with PTSD.

How similar studies have gone: Previous clinical trials of MDMA-assisted therapy for PTSD have reported promising symptom reductions, and this trial builds on those findings by focusing on optimizing the number of treatment cycles.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Are a U.S. military veteran at least 18 years old.
2. Are able to provide written, informed consent.
3. Are able to swallow pills.
4. Agree to have study visits recorded, including Experimental Sessions, psychological assessments, and non-drug therapy sessions.
5. Must provide a contact who is willing and able to be reached by the investigators in the event of a participant becoming unwell or unreachable.
6. If able to become pregnant, must have a negative pregnancy test at study entry and prior to each Experimental Session, and must agree to use adequate contraceptive methods.
7. Must have a current PTSD diagnosis at screening and baseline.
8. Must not participate in any other interventional clinical trials for the duration of the study.
9. Must commit to medication dosing, therapy, and all study procedures.

Exclusion Criteria:

1. Are not able to give adequate informed consent.
2. Have a history of any medical condition, or any significant clinical finding on screening tests, that could make receiving a sympathomimetic drug harmful.
3. Have uncontrolled hypertension.
4. Have evidence or history of significant medical or psychiatric disorders.
5. Have symptomatic liver disease.
6. Have history of hyponatremia or hyperthermia.
7. Weigh less than 48 kilograms (kg).
8. Unable or unwilling to safely taper off prohibited psychiatric medication.
9. Abusing illegal drugs or alcohol.
10. Have received Electroconvulsive Therapy (ECT) or ketamine therapy within 12 weeks of enrollment.
11. Are pregnant or nursing or are able to become pregnant and are not practicing an effective means of contraception.

Where it's running

  • James J. Peters VA Medical Center
    The Bronx, New York, United States
    Recruiting

Study contacts

  • Principal investigator: Rachel Yehuda, PhD — James J. Peters VA Medical Center
  • Study coordinator: Amy Lehrner, PhD
  • Email: Amy.Lehrner@va.gov
  • Phone: 718-584-9000

Similar studies

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

  • Reboxetine plus Ritalin vs Dog-Assisted Therapy for PTSD

    This study tests whether a drug combo of reboxetine and methylphenidate works better than dog-assisted therapy for people with PTSD.

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  • Self-Help CPT with WoVeN Peer Support for Women Veterans with PTSD

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  • Adaptive, personalized PTSD care for veterans

    This program will try different therapy sequences plus optional text-message homework reminders to see if switching treatments or sending prompts helps veterans with PTSD who aren't improving or are missing between-session homework.

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  • Multi‑Mode Cognitive Processing Therapy for adults with PTSD

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  • Combined MDMA and psilocybin treatment for Veterans with PTSD

    This trial tests whether giving MDMA followed 30 minutes later by psilocybin can be safely used to reduce symptoms in military veterans with long-standing PTSD.

    Recruiting Phase 1 Johns Hopkins University · Baltimore, Maryland · NCT06989957

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.