Amphetamines: pharmacology, abuse and addiction.

Amphetamine (beta-phenylisopropylamine) is a potent sympathomimetic amine of a simple structure with a multiplicity of biological effects that include hyperthermic, anorectic, cardiovascular and central nervous system stimulant actions. Since the 1930s a large number of drugs have been developed from systematic, chemical modifications of the basic amphetamine molecule to emphasize some of the properties of amphetamines and to eliminate or diminish others. These chemical manipulations have resulted in the synthesis of a variety of more selectively acting sympathomimetics. These altered molecules include CNS stimulants, potent psychomimetics (hallucinogens), anorectic agents, and vasoconstrictors that all have the basic beta-phenylisopropylamine skeleton. Reports of the consequences of abuse and addiction followed rather closely the development of these agents: manufacture, distribution and use continue to the present day. Both legitimate and illicit production account for a significant level of use of CNS stimulants. CNS stimulants are perhaps the most reinforcing drugs known to man. For this reason alone they will persist as drugs of choice among a variety of personalities.