 Purified cannabidiol, CBD, has shown promise in treating a variety of medical conditions including anxiety, psychosis, post-traumatic stress disorder, PTSD, substance abuse, sleep quality, Parkinson's disease, autism, smoking cessation, graft versus host disease, and intestinal permeability. There is also some preliminary evidence suggesting it may be effective in treating pain, COVID symptoms, cancer, and type 2 diabetes. However, more research is needed before these claims can be confirmed.