Chapter 7. Depressants and Inhalants. Depressants. Most widely-used and abused drugs in the U.S Is popular for its stress and anxiety relieving properties. History. Before Barbiturates: Chloral hydrate was first synthesized in1832 but not used clinically until 1870– for sleep
Depressants and Inhalants
Schematic diagram of the relative time course of two barbiturates and two benzodiazepines after oral administration.