Aka: Coke, crack

Cocaine is an addictive, illegal, stimulant drug made from the coco plant native to South America. As a street drug, cocaine is a fine, white crystal powder. Cocaine can also be processed to make a rock crystal, called crack. Cocaine increases the level of dopamine in brain circuits, and can cause hypersensitivity, irritability, paranoia, tremors or muscle twitches and a fast or irregular heartbeat, or in large amounts bizarre, unpredictable, and violent behavior. Mixing cocaine with other substances, such as alcohol, heroin, is particularly risky and can lead to an overdose and/or heart attack. Cocaine can also be missed with fentanyl which can lead to overdose and death.