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Kanna is a South African herb. Mesembrine and Mesembrenine are the 2 major alkaloids in Kanna. In small doses they have a meditative and narcotic effect. In higher doses they first have a stimulating cocaine like effect; and after about an hour it changes to a trance like sedation. When used as a snuff; 20 mg is sufficient to produce a substantial effect. 50 to150 mg mixed with chewing gum or placed under the tongue produces a more subtle effect. 200 mg can be added to a cup of tea. Contains 1 gram.