Psilocybin-assisted psychotherapy for treatment resistant depression: A randomized clinical trial evaluating repeated doses of psilocybin

Summary & key facts

This study tested whether giving repeated doses of psilocybin together with psychotherapy helps people whose depression did not get better with usual treatments. In a carefully controlled trial, researchers found that people who received psilocybin plus therapy had larger drops in depressive symptoms than the comparison group. Many people showed clear clinical improvement after the first dose and even more improved after a second dose. Side effects were usually short-lived, but the study was limited by its size and how long people were followed, so more research is needed to know how long benefits last and who will benefit most.

Key facts:

• The trial enrolled people with treatment-resistant depression and gave them psychotherapy plus repeated doses of psilocybin to test if this approach reduces depressive symptoms.
• Compared with the control group, the psilocybin plus therapy group showed larger reductions in standard depression scores at the main study time point.
• A noticeable number of participants had a clinically meaningful response or remission of symptoms after treatment, with many improving after the first dose and additional improvement after a second dose.
• Reported side effects were mostly temporary and included things like short-term rises in blood pressure, anxiety on the day of dosing, headaches, and nausea.
• The study’s limits include a relatively small sample size and limited follow-up, so the results are promising but not a final proof that repeated psilocybin doses are a long-term solution for everyone with treatment-resistant depression.

Topics

Chemical synthesis and alkaloids Diverse academic research themes Psychedelics and Drug Studies

Categories

Clinical Psychology Psychology Social Sciences

Tags

Clinical psychology Cognition Depression (economics) Depressive symptoms Economics Hallucinogen Internal medicine Macroeconomics Major depressive disorder Medicine Psilocybin Psychiatry Psychology Psychotherapist Randomized controlled trial Treatment-resistant depression

Substances

Psilocybin

Conditions & symptoms

Depression Sadness or low mood