Khat: scientific knowledge and policy issues.
D000349:Africa; D000470:Alkaloids; D000818:Animals; D001143:Arousal / Q000187:drug effects; D029754:Catha; D000697:Central Nervous System Stimulants; D006801:Humans; D010936:Plant Extracts; D011619:Psychotropic Drugs; D011640:Public Policy; D019966:Substance-Related Disorders / Q000209:etiology* / Q000517:prevention & control
D000470:Alkaloids; D000697:Central Nervous System Stimulants; D010936:Plant Extracts; D011619:Psychotropic Drugs; C023665:cathinone