Sceletium tortuosum is a little succulent plant that grows in the semi-arid Karoo and Namaqualand regions of South Africa. It has a long history of traditional use among the hunter-gatherers of the ...

Stellenbosch University provides funding as a partner of The Conversation AFRICA. The plant, known as kanna or kougoed by the San and Khoikhoi people, was mainly chewed or smoked to stay alert and ...