Khat or qat, Catha edulis is a flowering plant native to eastern and southeastern Africa. It has a history of cultivation originating in the Harar area and subsequently introduced at different times into the territories of Somalia, Djibouti, South and North Yemen, Kenya, Madagascar, Tanzania and down to south eastern Africa. Cultivated by farmers, its leaves are sold on the market to be chewed as a recreational stimulant. The world's largest consumers are Eastern Africans, particularly Somalis, and nearby Yemen; with the largest producers/exporters being Ethiopia and Kenya,

Cathinone is a monoamine alkaloid found in the shrub Catha edulis (khat) and is chemically similar to ephedrine, cathine, methcathinone and other amphetamines. It is probably the main contributor to the stimulant effect of Catha edulis, also known as khat. Cathinone differs from many other amphetamines in that it has a ketone functional group. Other phenethylamines that share this structure include the stimulants methcathinone, MDPV, mephedrone and the antidepressant bupropion.