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
[{'content': 'Which of the following drugs can cause galactorrhea \nSelect and explain. \nA. Bromocriptine, B. Pantoprazole, C. Metoclopramide, D. Omeprazole', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref: KDT, 6th ed. pg. 643* Galactorrhea is caused by increased level of prolactin.* Normally, this prolactin is in inhibited state by Dopamine.* Prolactin is under predominant inhibitory control of hypothalamus through PRIH (Prolactin Release Inhibitory Hormone), which is Dopamine that acts on pituitary lactotrope D2 receptor.* Dopaminergic agonist like bromocriptine, DA and cabergoline decrease plasma prolactin levels and is used to treat hyperprolactinemia.* Dopaminergic antagonists like chlorpromazine, haloperidol, metoclopramide causes hyperprolactinemia by blocking D2 receptors.', 'role': 'assistant'}]