I want to emphasize the "might" in IF's post. There is absolutely no proven evidence that winstrol does anything to prevent gyno from progesterone activity. It is merely speculation and should not be relied upon 100%. If in doubt about progesterone gyno you need to find some ru486 as that is the only thing that can combat it. Unfortunately not only is it hard to come by, most ppl don't know how to dose it properly.

As for the rest, IF's post covered it 100%