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Psychedelic Therapy: A Primer for Primary Care Clinicians-5-Methoxy-N,N-Dimethyltryptamine
Burton J Tabaac1,2, Kenneth Shinozuka3,4, Anne Weisman5
1Department of Neurology, University of Nevada, Reno School of Medicine, Reno, NV.
American Journal of Therapeutics
|February 20, 2026
Summary
5-Methoxy-N,N-dimethyltryptamine (5-MeO-DMT) shows promise for rapid antidepressant effects in treatment-resistant depression. Further research is needed to confirm its long-term efficacy and safety in larger clinical trials.
Area of Science:
- Neuroscience
- Psychopharmacology
- Clinical Psychiatry
Background:
- 5-Methoxy-N,N-dimethyltryptamine (5-MeO-DMT), also known as mebufotenin, is a naturally occurring psychedelic alkaloid.
- Found in Sonoran Desert toad venom and various plant species, it acts on the serotonergic system.
Purpose of the Study:
- To evaluate the potential of 5-MeO-DMT as a rapid-acting treatment for psychiatric conditions, particularly treatment-resistant depression.
- To assess the efficacy and safety of 5-MeO-DMT in preliminary clinical trials.
Main Methods:
- Review of early-phase clinical trials, including Phase 2a and 2b studies.
- Analysis of top-line data from a Phase 2b trial for treatment-resistant depression.
Main Results:
- Rapid antidepressant effects were observed in clinical trials.
- A recent Phase 2b trial indicated remission in 57.5% of participants with treatment-resistant depression within 8 days.
- Preliminary evidence suggests 5-MeO-DMT may outperform selective serotonin reuptake inhibitors (SSRIs) for depressive symptoms.
Conclusions:
- 5-MeO-DMT is an emerging, ultra-short-acting psychedelic with potential for treating treatment-resistant depression.
- Current evidence is based on early-phase studies with small sample sizes.
- Larger randomized controlled trials (RCTs) are warranted to further investigate long-term effects and efficacy.
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