Cannabidiol (CBD) is a phytocannabinoid discovered in 1940. It is one of 113 identified cannabinoids in cannabisCannabis (/ˈkænəbɪs/) is a genus of flowering plants in the family Cannabaceae. The number of species within the gen... More plants and accounts for up to 40% of the plant’s extract.[7] In 2018, clinical research on cannabidiol included preliminary studies of anxiety, cognition, movement disorders, and pain.