This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
which of the following Is used in the treatment of hyperprolactineinia? 
Select and explain. 
A. Cimetidine, B. Methysergide, C. Bromocriptine, D. Ondansetron
C: Bromocriptine
Answer: C: Bromocriptine 
Explanation: 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)