Wait, I thought AI was a brand name. Does this post cycle formula lower estrogen? I thought it was just a test booster deal, my bad. I see now that it has something they call "trans-reversitol" in it. I see people saying it is like an OTC SERM, but I also see it is "a natural antioxidant from grapes, increases sperm output in healthy rats." What do you guys think? Think something in grapes would lower estrogen enough to amount to anything when on a cycle?