Cocaine is a powerfully addictive stimulant drug made from the leaves of the coca plant native to South America. It is usually distributed as a white, crystalline powder and is often diluted or "cut" with a variety of substances, such as sugars and local anesthetics, to stretch the amount of the product and increase profits for dealers. Cocaine hydrochloride is most commonly snorted, but it can also be injected and rubbed into the gums. Crack cocaine is the smokable form of the drug and comes as crystals known as rocks or stones. Cocaine and methamphetamine belong to the broad class of drugs called psychostimulants, which also includes amphetamine and methylphenidate.

In summary, cocaine is a stimulant drug that is highly addictive and made from the leaves of the coca plant. It is usually distributed as a white, crystalline powder and can be snorted, injected, or rubbed into the gums. Crack cocaine is the smokable form of the drug. Cocaine and methamphetamine belong to the broad class of drugs called psychostimulants.