The Dostinex should prevent the gyno from even appearing. Nolvadex should be kept on hand in case it does appear. I'm not sure how much the Nolvadex will help but I should mention that I got gyno on a tren only cycle and got rid of it with Nolvadex.
I thought oestrogen had to be present for the progesterone to have a detrimental effect in the first place...so theoretically, wouldn't nolvadex alone be enough to prevent gyno induced by drol?