Bromperidol (marketed as Bromidol, Bromodol) is a butyrophenone derivative. It is a potent and long-acting neuroleptic, used as an antipsychotic in the treatment of schizophrenia. It was discovered at Janssen Pharmaceutica in 1966. Bromperidol is a bromine analog of Haloperidol hydrochloride (sc-203593) which functions as a D2DR (dopamine D2 receptor) antagonist. Studies suggest that cytochrome CYP3A4 catalyzes the dehydration of Bromperidol and N-dealkylation of Bromperidol. In addition, CYP3A4 can oxidize N-dealkylated Bromperidol back into Bromperidol. Alternately, Bromperidol antagonizes the Neuroendocrine DA receptors which regulate hypothalamic LH-RH release.