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C Donegan

3 papers in the library · 5 citations · publishing 2025-2026

Papers

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LSD microdosing for major depressive disorder: Mood and pharmacokinetic outcomes from a Phase 2a trial

Progress in Neuro-psychopharmacology and Biological Psychiatry February 18, 2026 Dimitri Henriques Daldegan-Bueno, C Donegan, Rachael Sumner et al. 1 citation

Results suggest short-term improvements in mood following microdosed LSD in people with depression, warranting confirmation in controlled trials. It provides the pharmacokinetic parameters of 8 μg of LSD in a sample of people with depression and indicates no tolerance or sensitisation to repeated microdoses of LSD, despite incremental dose titration.

LSD microdosing in major depressive disorder: results from an open-label trial

Neuropharmacology November 5, 2025 Dimitri Daldegan-Bueno, C Donegan, Rachael Sumner et al. 4 citations

Major depressive disorder (MDD) affects approximately 5 % of the global population. Classic psychedelics have shown promise in treating various mental health disorders. This study evaluated the feasibility and tolerability of an 8-week regimen of microdosed lysergic acid diethylamide (LSD) as a treatment for major depressive disorder in an open-label phase 2A trial (LSDDEP1). Nineteen...

155. EXPLORING LSD MICRODOSING IN AN OPEN-LABEL PILOT FOR MAJOR DEPRESSIVE DISORDER: THE INTERPLAY OF BEHAVIORAL ACTIVATION, MOOD IMPROVEMENT, AND CONNECTEDNESS

The International Journal of Neuropsychopharmacology August 1, 2025 C Donegan, D Daldagen-Bueno, Robin J Murphy et al.

Abstract Background Depressive disorders affect about 280 million people worldwide, with many struggling to find effective relief. Conventional antidepressants are widely prescribed but often lack efficacy and have side effects, leaving many patients dissatisfied or untreated. Concurrently, psychedelic therapies have gained momentum in both research and ‘in the wild’, with emerging evidence...