Mesterolone. Proviron. Nouveaux Ltd. A drug with anti-estrogenic activity. By blocking the estrogen receptors.

Tamoxifen Citrate. Nolvadex. Nouveaux Ltd. Who use steroids, is used to prevent gynecomastia.

Anastrozole. Nouveaux Ltd. Arimidex belongs to a class of drugs called aromatase inhibitors the benefit was limited to estrogen.

Clomiphene Citrate. Nouveaux Ltd. anti-estrogenic, which can be useful in bodybuilding for athletes using steroids.