Catha edulis, a plant that has amphetamine effects

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Abstract
The chewing of fresh leaves of the khat bush (Catha edulis) is common in certain countries of East Africa and the Arab peninsula, because this material has a stimulating effect. During the last decade, important progress has been made in understanding the pharmacology of this drug. Its actions are mainly due to the alkaloid cathinone, a substance that can be called ‘a natural amphetamine’.