Cocaine is a nervous system stimulant made from South American coca plant leaves. Also called “uppers,” stimulants like cocaine temporarily increase alertness and energy. Street names include coke, coca, snow, flake, and blow. It is available as a fine, white powder, which can be snorted or dissolved in water and injected intravenously.
Crack is a highly addictive, concentrated freebase form of cocaine. It is made by cooking powdered cocaine with a base, such as baking soda, to form a solid. The name crack actually comes from the noise made when heating the substance for consumption, generally through smoking. The solids produced from the cooking process are known colloquially as rocks.
Heroin is a highly-addictive, opioid drug made from morphine. The drug goes by the street names of smack, big H, horse, and hell dust. It is available as a powder, which is white or brown in color. There is also a black, sticky version of the substance known as black tar heroin. Heroin is typically injected intravenously, but it can also be smoked or snorted.
Lysergic acid diethylamide (LSD) is a potent, psychedelic drug manufactured from the lysergic acid of ergot, a fungus that grows on rye and other grains. LSD, also known simply as “acid,” is a hallucinogen. Drugs in this family alter perception, thoughts, and feelings, and cause hallucinations.