Tamoxifen is an antiestrogen drug used in the treatment of breast cancer. It blocks the activity of estrogen, helping to stop the growth of some tumors. Each tablet contains 30.4 mg of tamoxifen citrate which is equivalent to 20 mg of tamoxifen. Each tablet contains the following inactive ingredients: carboxymethylcellulose calcium, magnesium stearate, mannitol and starch. Chemically, tamoxifen is the trans-isomer of a triphenylethylene derivative. Tamoxifen is a nonsteroidal SERM of the triphenylethylene family and was structurally derived from diethylstilbestrol -like estrogens and antiestrogens such as chlorotrianisene and ethamoxytriphetol. [103][104][105][106] Initially, clomifene was synthesized, and tamoxifen was developed subsequently. [103][105][106] Tamoxifen is closely related. Nolvadex (Tamoxifen Citrate) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Tamoxifen is used to treat some types of breast cancer in men and women. Tamoxifen is also used to lower a woman's chance of developing breast cancer if she has a high risk (such as a family history of breast cancer). Tamoxifen citrate is a type of hormone therapy called a selective estrogen receptor modulator (or SERM). It works by binding to estrogen receptors, blocking estrogen’s effects in some tissues while mimicking its effects in others. Overview: Tamoxifen is commonly used to treat certain types of breast cancer. It is also used to lower your risk of invasive breast cancer and keep some breast cancers from coming back. It blocks. Tamoxifen Citrate Tablets are indicated for the treatment of axillary node-negative breast cancer in women following total mastectomy or segmental mas-tectomy, axillary dissection, and breast irradiation. Tamoxifen (brand names: Nolvadex, Soltamox) is a medicine that blocks the effects of the hormone estrogen (called a selective estrogen receptor modulator, or SERM). Tamoxifen is a first choice among doctors for treating women who have not yet gone through menopause. Tamoxifen reference guide for safe and effective use from the American Society of Health-System Pharmacists (AHFS DI).