In this randomized, double-blind, placebo-controlled, comparative study the effects of daily supplementation with 300 mg of cannabidiol (CBD) during 4 weeks on social anxiety disorder (SAD) symptoms among 37 Japanese teenagers with SAD. 

SAD symptoms that were measured at the beginning and end of the treatment period using the Fear of Negative Evaluation Questionnaire and the Liebowitz Social Anxiety Scale were significantly decreased after 4 weeks of CBD supplementation in teenagers compared to placebo (p < 0.05 for both scales). In conclusion, these results indicate that CBD could be a useful option to treat social anxiety.

Masataka N. Anxiolytic Effects of Repeated Cannabidiol Treatment in Teenagers With Social Anxiety Disorders. Front Psychol. 2019;10:2466. Published 2019 Nov 8. doi:10.3389/fpsyg.2019.02466