Rutgers University
Rutgers University: Drugs, Brains and Behavior
This is a link to a book posted on the internet which discusses many different drugs and their effects on the brain. Also provides some discussion on the influences of different drugs and neurotransmitters in reference to different brain...
PBS
Wnet: Thirteen: Pbs: Do All Drugs Affect the Brain Similarly?
Discusses the mechanism by which drugs effect the brain. Contains links which discuss other aspects of drug addiction.
Other
University of Nebraska at Omaha: Brains Rule! Games: Ecstasy Invaders
Go on a mission inside a nerve cell to find out about how neurons produce and release neurotransmitters to communicate with other neurons. Learn what happens to these brain chemicals when the drug ecstasy interrupts the process.
University of Texas at Austin
University of Texas: Dopamine
Using dopamine as an example, the page gives a description of how neurotransmitters work and the effects of drugs and enzymes on neurotransmitter function.