Lysergic Acid Diethlamide (LSD) LSD or lysergic acid diethlamide is a commonly used drug of teens. LSD is a hallucinogenic drug which effects the nervous system. The drug is ingested in many different ways, absorbed through the skin, taken orally or absorbed through the eye or ear. This drug was originally developed by the government of the United States as a treatment for psychological conditions such as alcoholism and drug addiction. In Canada, where experimentation is not heavily restricted, LSD has been used to reduce the suffering of te ....