Any part of, or extract from, the female hemp plant cannabis sativa. marijuana contains cannabinoids, substances with hallucinogenic, psychoactive, and addictive properties. this agent has potential use for treating cancer pain and cachexia. check for "https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/c26659" active clinical trials using this agent. ("http://ncit.nci.nih.gov/ncitbrowser/conceptreport.jsp?dictionary=nci%20thesaurus&code=c26659" nci thesaurus)