Cocaine is an “upper” which means it increases brain activity, making people feel more alert or excited. Other uppers are substances such as caffeine, speed, nicotine, and crystal meth. When the excited feeling starts to wear off (this is the crashing point) the person starts to feel really tired, or depressed.

Side effects of cocaine can include jitters, fast heartbeats, diarrhea, and anxiety. With increased use people could experience strokes, seizures, depression, and if you are a guy, you might have a hard time getting an erection (getting hard).

(The above section comes from our friends at Teen Talk,