Dopamine: Dopamine is concentrated in areas that regulate motivation, feelings of reward and make a user feel extremely self-confident and invincible. (http://www.drugabuse.gov/news-events/nida-notes/2007/10/impacts-drugs-neurotransmission) Methamphetamine can cause harmful things, such as inability to sleep, paranoia, aggressiveness, and hallucinations.
4. Ecstasy (MDMA)
Serotonin: Ecstasy increases the release of serotonin and causes confusion, depression and anxiety. Ecstasy is an antagonist; because the excess levels make the brain produce less serotonin and memory loss is one of the long term damage to the brain. The excess release of serotonin by ecstasy causes the mood elevating effects experienced by