<prompt> which of the following Is used in the treatment of hyperprolactineinia?CimetidineMethysergideBromocriptineOndansetron  <response>: Dopamine actions are always opposite to prolactin Bromocriptine is a dopamine receptor agonist mainly D2 receptors. Dopamine is the main factors controlling prolactin secretion. Being a agonist it effectively reduces the secretion of prolactin. apa from bromocriptine, cabergoline, pergolide are also used in hyperprolactenemia REF.Essential of medical pharmacology K D TRIPATHI 6 Edition, Page No - 236 