Firstly, you can't get progesterone induced gyno unless you have high estrogen levels. Thus, if you run Arimidex/Letrozole/Exemastene (aromatase inhibitors) or a moderate (50mg ED) of Nolva and Proviron each, you will not get gyno. Running a anti-prolactin (pramipexole/cabergoline) with your Tren helps avoid the side effects. The key is getting rid of estrogen, progesterone will only aid in the presence of estrogen, however it can't be overlooked. Personally, I'd stay away from anything related to high progesterone if I was you. Also, to reverse gyno it has been shown that running a high dose of Letrozole (2.5mg a day ~ that's one tab, but it's about 4 times what you would take ED to prevent gyno) along with a high does of Nolvadex (75-100mg) ED for 2-3 weeks, than taper down to 1.25mg Letro/ED and 50mg of Nolva ED for the next 2-3 weeks... conitnue 2-3 weeks with 50mg Clomid and 25 mg of Nolva ED... It can reverse gyno, although the best cure is prevention - do your homework, know the possible side effects, and have the counter... I hope the lesson was learned.