MAPS (Multidisciplinary Association for Psychedelic Studies) is working to demonstrate the safety and efficacy of smoked botanical marijuana as a prescription medicine for specific medical uses to the satisfaction of the U.S. Food and Drug Administration. It has received regulatory approval to conduct a study of smoked marijuana for symptoms of post-traumatic stress disorder (PTSD) in veterans of war. Note: this link will take you out of the NEU site into MAPS (medical marijuana article): http://www.maps.org/research/mmj