Using cocaine can make you feel paranoid, angry, hostile, and anxious, even when you're not high. Cocaine is addictive. Cocaine interferes with the way your brain processes chemicals that create feelings of pleasure, so you need more and more of the drug just to feel normal. People who become addicted to cocaine start to lose interest in other areas of their life, like school, friends, and sports. Cocaine can kill you.
Cocaine use can cause heart attacks, seizures, strokes, and respiratory failure.
Know the law. Even first-time cocaine users can have seizures or fatal heart attacks. Know the risks. Combining cocaine with other drugs or alcohol is extremely dangerous. The effects of one drug can magnify the effects of another, and mixing substances can be deadly.