AbstractA polarographic method has been developed for the determination of an antidepressant, 10-(m-chlorophenyl)-2,3,4,10-tetrahydropyrimido [1, 2a] indol-10-ol hydrochloride. The method is not subject to interference from the immediate precursor in the synthetic route of drug preparation or the products of thermal degradation of the active drug substance. The method may be used to monitor storage stability studies.