What is sold as Ecstasy today is typically a toxic concoction of a variety of substances such as ephedrine which is a stimulant, dextromethorphan which is a cough suppressant, ketamine which is an anesthetic or even caffeine, cocaine and methamphetamine.
The euphoria experienced as a result of crack use is usually followed marked by feelings of anxiety, confusion, and often depression.
Withdrawal symptoms can vary significantly among individuals, but some symptoms such as depression, anxiety and craving are very common under most circumstances.