Ecstasy (3, 4-methylenedioxy-N-methamphetamine, or MDMA) is a drug that is illegally made. Ecstasy is a stimulant drug that can cause hallucinations. It is known as a designer drug because it was created for the purpose of making someone feel high. The drug is popular with teens and young adults who go to clubs, concerts, or “rave” parties. Users think the drug will make them feel good and keep them going for days without rest. But people who use Ecstasy don’t realize how dangerous this drug is. Ecstasy has become one of the most common illegal drugs sold on the streets. In the last few years, Ecstasy has sent many people to emergency rooms because of its dangerous side effects.