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Psilocybin versus escitalopram: the primary depression comparison was not significant

A six-week study did not establish superiority on its main endpoint. Favorable secondary outcomes were not adjusted for multiple testing.

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Supplement Science Insights Editorial Team

Published September 23, 2026

The study and its comparison

Fifty-nine adults with longstanding moderate-to-severe depression were randomized to psilocybin sessions with daily placebo or escitalopram with very-low-dose psilocybin sessions. Both groups received psychological support. [1]

The primary self-reported depression-score change did not significantly differ at six weeks. Several secondary outcomes favored psilocybin, but those analyses lacked correction for multiple comparisons. [1]

What the finding establishes

A nonsignificant difference does not prove equivalence, and secondary findings do not replace the primary result. The small, short trial cannot rank treatments for every patient. Funding came from the Alexander Mosley Charitable Trust and Imperial’s research center; full conflicts were not established from the abstract. Do not alter prescribed treatment based on this comparison alone. [1]

A hypothetical distinction

Imagine many secondary tests are reported. Their apparent positives require attention to multiplicity.

Interpretation checklist — Psilocybin versus escitalopram
DetailInterpretation
Measured outcomeKeep the endpoint specific
Study preparationNot every retail product
Remaining uncertaintyNot resolved by a mechanism
Psilocybin versus escitalopram: the primary depression comparison was not significant — original article outline diagram
Original editorial diagram of this article’s sections; no product photograph or clinical finding is depicted.

Sources for this article

  1. Trial of Psilocybin versus Escitalopram for Depression.
    Source consulted: 2026-09-19. This is a reference resource, not a claim that we conducted the studies or tested a product.