Tabaac · American journal of therapeutics · Narrative review · n=?

Psychedelic Therapy: A Primer for Primary Care Clinicians-5-Methoxy-N,N-Dimethyltryptamine.

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Level 5 - mechanism / opinion, no new human data

Narrative clinical review without systematic search or meta-analytic methodology

PubMed 41714909 · doi:10.1097/MJT.0000000000002106 · record verified 2026-08-28

What was done

This narrative primer summarized the pharmacology, safety profile, and early clinical trial evidence for 5-methoxy-N,N-dimethyltryptamine (5-MeO-DMT; mebufotenin) as an ultra-short-acting psychedelic for psychiatric conditions.

What was found

Top-line results from a cited phase 2b trial reported that 57.5% of participants with treatment-resistant depression remitted within 8 days. Other phase 2a and 2b trials indicated symptom reductions greater than standard selective serotonin reuptake inhibitors. However, only 2 double-blind randomized controlled trials have been completed in clinical populations, with existing sample sizes capped at n ≤ 193.

Why it matters

If validated in larger trials, 5-MeO-DMT could provide an ultra-rapid antidepressant option that requires significantly shorter clinical administration sessions than longer-acting psychedelics like psilocybin.

Limits

The underlying evidence base is restricted to small sample sizes (n ≤ 193) and very few randomized controlled trials, with long-term efficacy, durability, and safety remaining uncharacterized. The article itself is an unsystematic narrative overview.

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