From the Vendor: This is a well done extract of Sceletium tortuosum at 100x. While the price may seem a bit steep in comparison to our competitors, they are not carrying this particular material. A must-try. The alkaloids contained in S. tortuosum include: mesembrine, aptenia, mesembrenone, mesembrenol and tortuosamine. Mesembrine is the major alkaloid present in Sceletium tortuosum.