Centpropazine (CPZ, CTZ) is an experimental antidepressant which was under development for the treatment major depressive disorder in India but was never marketed.[1][2][3] It is described as having imipramine-like clinical effects, reversing reserpine-induced effects in animals, and potentiating amphetamine-induced effects in animals.[3] The mechanism of action of centpropazine is unknown.[4] The drug reached phase 3 clinical trials prior to the discontinuation of its development.[1] It was first described in the scientific literature by 1980.[3][5]