Marijuana is the most commonly abused drug. A dry, shredded green/brown mix of flowers, stems, seeds, and leaves of the plant Cannabis sativa, it usually is smoked as a cigarette (joint, nail), or in a pipe (bong). It also is smoked in blunts, which are cigars that have been emptied of tobacco and refilled with [...]

One of the first drugs used by the human race is cocaine. Although the pure cocaine was extracted for the first time in the mid-19th century from the leaf of Erythroxylon coca bush, which grows primarily in Peru and Bolivia, the coca leaves have been used for thousands of years.
Cocaine is an intense euphoric drug [...]