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 hyperprolactinemia? 
Select and explain. 
A. Cimetidine, B. Methysergide, C. Bromocriptine, D. Ondansetron
C: Bromocriptine
Answer: C: Bromocriptine 
Explanation: Ans. (C) Bromocriptine(Ref: KDT 8/e p261)It is an ergot alkaloid and is a dopamine agonist. Dopamine acts as prolactin inhibiting hormone in the brain. Agonism of dopamine receptors by bromocriptine is responsible for its use in hyperprolactinemia.