CAARS

Safety and Efficacy of Repeated Low-Dose LSD for ADHD Treatment in Adults A Randomized Clinical Trial

In a 6‑week, multicentre, double‑blind randomised phase 2A trial of 53 adults with moderate–severe ADHD, twice‑weekly low‑dose LSD (20 μg) was physically safe and psychologically well tolerated. However, LSD did not reduce ADHD symptoms more than placebo on the AISRS.

Published

June 1, 2025

Journal

JAMA Psychiatry

Authors

Mueller, L., de Jesus, N. M. S., Schmid, Y., Müller, F., Becker, A. M., Klaiber, A., Straumann, I., Luethi, D., Haijen, E. C. H. M., Hurks, P. P. M., Kuypers, K. P. C., Liechti, M. E.