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Lysergic acid diethylamide (LSD) in anxiety

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Lysergic acid diethylamide (LSD) is a well-known classic psychedelic substance:

  • psychedelics, including LSD and psilocybin, induce profound acute alterations of mind and mystical-type experiences primarily by interacting with the serotonin 5-HT2A receptor
  • the use of LSD in the management of anxiety was investigated in an investigator-initiated 2-centre trial that used a double-blind, placebo-controlled, 2-period, random-order, crossover design with 2 sessions with either oral LSD (200 μg) or placebo per period (1)
    • the primary endpoint was anxiety symptoms 16 weeks after the last treatment session
    • showed that LSD produced long-lasting and notable reductions in anxiety and comorbid depression symptoms up to 16 weeks


  1. Holze F, Gasser P, Müller F, Dolder PC, Liechti ME. Lysergic Acid Diethylamide-Assisted Therapy in Patients With Anxiety With and Without a Life-Threatening Illness: A Randomized, Double-Blind, Placebo-Controlled Phase II Study. Biol Psychiatry. 2023 Feb 1;93(3):215-223.

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