Freeman, T. P., Hindocha, C., Baio, G., Shaban, N. D., Thomas, E. M., Astbury, D., … & Bloomfield, M. A. (2020). Cannabidiol for the treatment of cannabis use disorder: a phase 2a, double-blind, placebo-controlled, randomised, adaptive Bayesian trial. The Lancet Psychiatry.

Medically prescribed cannabidiol may reduce cannabis use in the short term according to the results of this study. However, further work needs to be done to prove its safety and longer-term benefit.

https://www.thelancet.com/journals/lanpsy/article/PIIS2215-0366(20)30290-X/fulltext