In the previous article, we mentioned that bodybuilder actually uses the anti-estrogen effects of Tamoxifen. Tamoxifen is SERM(selective estrogen receptor modulator), not AI(aromatase inhibitors), so can Tamoxifen replace aromatase inhibitors? Tamoxifen is highly selective and plays an anti-estrogen role in the breast. It preferentially binds to estrogen receptors, preventing the potential buildup of large amounts of estrogen in the breast …