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Psychedelic-Assisted Therapy

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# Psychedelic-Assisted Therapy

Portal: Mind & Cognition
Stage: Late-stage trials, approval contested
Evidence: Early human
Template: Intervention
Risk: Moderate
Reversibility: Reversible
Last reviewed: May 2026

== Summary ==
Psilocybin and MDMA paired with therapy show promise for depression and PTSD in trials, but regulatory approval, durability, and trial design remain unsettled.

== Key takeaways ==
* Trials pair a psychedelic with structured psychotherapy, not a drug alone.
* Results in depression and PTSD are promising but face blinding and durability questions.
* Regulatory approval has been uneven, underscoring unsettled evidence.

== The approach ==
Psychedelic-assisted therapy combines a supervised dose of a compound such as psilocybin or MDMA with preparatory and integration psychotherapy. Trials in treatment-resistant depression and PTSD have reported meaningful improvements for many participants.

The model treats the drug as a catalyst for therapy rather than a stand-alone medication, which complicates comparison with conventional drug trials.

== Why it is still early ==
Blinding is hard when participants can tell whether they received a psychedelic, and expectancy may inflate effects. Durability, optimal dosing, and safety in broader populations are not fully established.

Regulators have not uniformly accepted the evidence — at least one high-profile application was rejected pending stronger data — which keeps the field in the early-human, not established-practice, column.

== Open questions ==
* How much of the benefit survives rigorous blinding?
* How long do effects last, and for whom is it unsafe?

== Watchlist ==
* Blinding-robust trials
* Durability data
* Regulatory decisions

== References ==
* MDMA-assisted therapy for PTSD (phase 3) — Mitchell et al., Nature Medicine, 2021. https://pubmed.ncbi.nlm.nih.gov/33972795/. Phase 3 trial reporting benefit for severe PTSD.
* Psilocybin vs escitalopram for depression — Carhart-Harris et al., NEJM, 2021. https://www.nejm.org/doi/full/10.1056/NEJMoa2032994. Head-to-head trial of psilocybin therapy in depression.

== Categories ==
[[Category:Mind & Cognition]]
[[Category:psilocybin]]
[[Category:MDMA]]
[[Category:mental health]]

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