Antipsychotic

медицина антипсихотический; снимающий или предотвращающий приступы психоза

Англо-русский научно-технический словарь

Antipsychotic

noun any of the powerful tranquilizers (as the phenothiazines and butyrophenones) used especially to treat psychosis and believed to act by blocking dopamine nervous receptors — called also neurolepticantipsychotic adjective

Merriam-Webster's Collegiate Dictionary