There are no FDA approved treatments for use in adults with autism spectrum disorder (ASD),
many of whom have distressing anxiety, mood disturbances, sleep problems, and agitation. Some
researchers and individuals with ASD have noted that cannabidiol (CBD) is beneficial for
those psychiatric problems. This study is to learn more about the effectiveness and safety of
CBD in the treatment of psychiatric problems in adults with ASD. The study will last 14 weeks
total, during which six weeks participants will receive a pill containing CBD, two weeks
where participants will receive no drug/placebo, and six weeks where participants will
receive the placebo, an inactive pill. As part of the study, participants will have regular
visits and be asked questions about anxiety, challenging behaviors, daily functioning,
cognition, and physical symptoms, on standard assessments.