Urinary excretion of the drug and its main metabolite in man, after the administration of (±)-, (+)- and (-)-ethylamphetamine

Abstract

Abstract The urinary excretion of ethylamphetamine and its metabolite amphetamine was studied in man after oral administration of (±)-, (+)-, and (-)-ethylamphetamine hydrochloride. The rates of excretion of these amines are dependant on the pH of the urine. At acid values, the (+)-isomer is metabolized faster and to a greater extent than the (-)-isomer, which is excreted mostly unchanged. The effect of alkyl chain length on stereoselective metabolism of N-alkylamphetamines is discussed.