I use what I assume to be a similar product called Estrofactors. The one I take doesn't contain any estrogen (or any hormone), but balances your body's estrogen, progesterone, and testosterone levels.
It's been a life saver for me! I just had my period and haven't felt the need to karate chop one single person in the neck! :)
Best of luck! I know how hard hormone imbalance can be!