This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
All are causes of hyperprolactinemia, except 
Select and explain. 
A. Bromocriptine, B. Phenothiazine, C. Methyldopa, D. Metoclopramide
A: Bromocriptine
Answer: A: Bromocriptine 
Explanation: Answer is A (Bromocriptine): Bromocriptine is a potent dopamine agonist. It decreases prolactin release from pituitary by activating inhibitory dopaminergic receptors on lactotrope cells, a strong anti-galactopoietics action. All others are known to cause increased Prolactin.