Antiestrogen

Antiestrogen

Dr. KennedyAn antiestrogen is a substance that can prevent the full expression of estrogen. Antiestrogens act by exerting antagonistic effects on target tissues (DHEA and testosterone act in this way) or by competing with estrogens for access to receptor sites located on the cell surface. An example of this is the drug tamoxifen, an antiestrogen that is used in the treatment of breast cancer and to reduce the breast cancer incidence in high-risk women.

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