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Optimi Health to Initiate Phase 2 Clinical Trial Evaluating Psilocybin-Assisted Therapy for Major Depressive Disorder

$OPTHPress releaseSep 10, 2026, 8:45 AM ETRead the release

Optimi Health announced plans to initiate a Health Canada-authorized, multisite Phase 2 trial of psilocybin-assisted therapy for major depressive disorder, enrolling up to 200 participants at sites across Canada. The trial is slated to begin in the first half of 2027, with dosing expected to be complete by the end of 2027. The study will test a single supervised dose of naturally derived psilocybin, with the primary efficacy endpoint being change in MADRS total score from baseline, plus periodic interim safety and efficacy readouts.

Key figures

Drug Name
natural psilocybin
Phase Of Trial
Phase 2
Condition
major depressive disorder (MDD)
Trial start
first half of 2027
Dosing regimen
single supervised dose
Interim readouts
periodic interim safety and efficacy readouts planned
Primary endpoint
change in MADRS total score from baseline
Dosing completion
end of 2027
Planned enrollment
200
Regulatory authorization
Health Canada

AI analysis

Red flags4 · Pro

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    OPTH: Optimi Health to Initiate Phase 2 Clinical Trial Evaluating Psilocybin-Assisted Therapy for Major Depressive Disorder — AI Analysis | Signal8