All are causes of hyperprolactinemia, except
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.
Bromocriptine
Phenothiazine
Methyldopa
Metoclopramide