HD Labs Tamox TabsNolvadex is a drug commonly referred to as an anti estrogen. This would suggest less or no estrogen is produced due to the drugs actions as in the case of Teslac. Actually, Nolvadex is an estrogen antagonist, meaning it competes with estrogen at estrogen receptor sites. This prevents the active estrogen from entering its receptor and creating an estrogenic complex capable of activity. Since many AAS aromatize (covert to estrogen) to some degree, the