I'm going to start lifting again soon (because school is taking all my time right now) and have some MAG-10 and 4-AD-EC left over that I want to use up. When I was taking those two I was also taking M as well to keep estrogen in check. Since M isn't offered any more (dang it!!) I was looking at some anti-estrogen stuff from a couple other sites, but I am not sure which would be good to use or not. Some of them seem like they would be a little to powerful for what I need.
What are some things to look for when browsing for an anti-estrogen supplement?