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Health · Mental health · published 2026-09-16 · via MedPage Today

Psychedelic Anxiety Trial Succeeds; Depression Drug Fails

Image via MedPage Today
Image via MedPage Today

Definium Therapeutics reported that its investigational LSD tablet met primary and key secondary endpoints in a second phase III trial for anxiety. In contrast, a phase II trial of a selective M1 receptor inhibitor for major depressive disorder from Contineum and Johnson & Johnson missed its primary outcome. Other psychiatry news included a meta-analysis linking ADHD to higher odds of gastrointestinal issues and a study suggesting adult-diagnosed ADHD may be milder than youth-diagnosed cases.

Expanded Detail

Definium's lysergide tablet achieved its primary and key secondary goals in a second phase III anxiety trial, signaling momentum for psychedelic-based therapeutics. Separately, the Contineum/J&J M1 receptor inhibitor failed its phase II depression endpoint, underscoring the difficulty of developing novel mechanisms for mood disorders.

ADHD research presented a mixed picture: one meta-analysis found elevated gastrointestinal comorbidity odds, while another study suggested adult-diagnosed cases carry milder clinical and genetic markers than youth diagnoses. Stimulant treatments, especially higher-dose methylphenidate and mixed amphetamine salts, beat placebo on both ADHD symptoms and stimulant-use measures.

Context

These findings may influence clinical practice and public perception. Psychedelic trial success could accelerate regulatory pathways and patient access, while the depression drug failure may temper expectations for rapid innovation. ADHD insights might refine diagnostic criteria and treatment approaches for adults. Postpartum psychosis discussions and celebrity disclosures could reduce stigma and improve screening. The VA burnout data may prompt workforce reforms, and the Romanian hospital fundraiser highlights infrastructure gaps in pediatric mental health care.

Expanded detail and Context are AI-generated analysis; the linked article remains the authoritative source.
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This summary is Al-enhanced to contain extended analysis and broader social context. The original is {NAME); the linked article is the authoritative source. Original headline: “LSD Drug's Anxiety Win; Alanis Morissette's 'Psychosis'; ADHD and GI Issues.” Browse more stories.