What are serms?
A SERM is the main product in a PCT. SERMS work by binding with estrogen receptors blocking estrogen actions (prohormonedb.com). The reason SERMS help after a cycle of steroids is because it makes the estrogen in your body ineffective. When the estrogen is ineffective, it gives your body the time for recover your natural testosterone. Once your body’s natural testosterone is back to normal levels, the estrogen will not diminish returning your body’s hormones back to normal.