Hmmmm...cocaine is a stimulant too.
Let's see...Ritalin? Stimulant. Cocaine? Stimulant. Yeah, they're both stimulants. Do you think that is why they're so similar in composition?
A pretty good site...
Addiction Pharmacology & Physiology
There are several different families of chemicals that might be classified as stimulants including cocaine, the amphetamines, amphetamine-like drugs such as Ritalin and over the counter agents such as ephedrine.
Another one...
Eddy M. Elmer: Common Psychoactive Agents---Stimulants
Lots of tables.
3-D image
3-D image
