Bromocriptine, Dostinex and another drug I like called Requip are centrally acting Dopamine agonists. Bromocriptine is actually a mixed agonist/antagonist. All of these are in classes of Parkinsonian drugs used to delay onset of Sinemet/Stalevo treatment.
DA suppresses Prolactin secretion, which along with progesterone has "pro-gyno" effects.
Its not clear that there are many serious reports of gyno that can be linked directly to tren, and if so, its not clear if suppressing prolactin will have any effect, if the actions of tren were themselves directly responsible.
It is clear that bromocriptine has to be dosed several times a day, and can have pseudoparkinsonian side effects or worse, dyskinetic side effects, constipation, urintary retention, GI distress, orthostatic hypotension (Feeling dizzy). I would advise against doing this at the current time.
NFG