APPLICATION OF ANALOGUE COMPUTER TO PHARMACOKINETIC AND BIOPHARMACEUTICAL STUDIES WITH AMPHETAMINE-TYPE COMPOUNDS

The kinetics of absorption, metabolism, and excretion of (+)‐amphetamine and (+)‐methylamphetamine, after oral administration of “free” dosage forms to man, under controlled acidic urine conditions, have been examined using an electronic analogue computer. This device has also been used to determine the in vivo rate of release of the drugs from hard gelatin capsule dosage forms and prolonged‐release preparations. In vivo drug release from the prolonged‐release preparations was correlated with in vitro drug release data. 1968 Royal Pharmaceutical Society of Great Britain