I believe I heard that pgf2 injected in the pecs has caused some gyno related side effects in some people, so I would be weary of this. People commonly inject it in the pecs cuz it eats the fat up but at the same time I read they have lumps that seem to grow behind the nipple at the same time. I don't know what to make of this, but using it to lessen gyno sounds like a toss up.