Most progesterone sides like prolactin gyno are easily treated with dostinex .5mg EOD OR B6 100mg 3 times daily (this may sound to be a bit excessive & one could try 100mg ED to start.) The primary affect on the body is to block the production of prolactin by the pituitary gland. Trenbolone, and to a lesser degree Nandrolone, both stimulate the pituitary gland to produce Prolactin. Prolactin gyno is normally presented as puffy cone shaped nips, sore to touch & itchy. Or, there can be a prolactin buildup in the glands under the arm or under the base of the pec.