University of Washington
University of Washington: Barbiturates
The University of Washington provides this great resource for students of all ages wanting to learn about barbiturates and the effects they have on the body and brain. Read about how these often-misused depressants can cause addiction,...
Other
U.s. Drug Enforcement Administration: Barbiturates [Pdf]
Here, you can read a very brief history of the development and use of prescription barbiturates, as well as descriptions of ultrashort, short, intermediate, and long-acting barbiturates.