I have been using Bromo for 8 weeks trying (quite successufully) to prevent gyno and libido problems from Deca. I started a quarter of a 2.5mg tab per day and go up to two half tabs per day for a total of 2.5mg/day. From reading this that may be an overkill. For me though, Bromo may induce a small feeling of well being, but other than this nothing. I have no nausea, head aches, drowsiness, sleeplessness, or any other -ness.
My understanding is that if you do have problems with Bromo you should definitely get Caborgoline (Dostinex). I am not sure I could have found this drug, but it is touted as better with lower side-effects (although more expensive). If prolactin inhibition is helping your existing gyno, but you cannot tolerate Bromo then Caborgoline will likely be wonderful for you.
Knowing what I know now about Bromo I might have looked harder for Caborgoline (I did look a little), but for me it has been a non-issue. I know some people recommend Caborgoline highly above Bromo and this seems well founded to me.
Good Luck.