Cannabis preparations (vide infra) are derived from Indian hemp plant (Cannabis sativa), which is a hardy, aromatic annual herb that grows wild under most climatic conditions. The plant grows to a height of 5 to 15 feet, and is characterised by an odd number of leaflets on each leaf (varying from 5 to 9), all having serrated or saw-tooth edges, and small, green flowers. The male and female flowers are borne on separate plants. After pollination, the male plants die back.
This topic describes: Active principle, Sources, Mechanism, Clinical (Toxic) Effects, Investigations and Management of Cannabis abuse.