Why is tamoxifen (Soltamox) prescribed to patients?

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asked Aug 12, 2019 in 3D Segmentation by freemexy (47,810 points)

Tamoxifen is used for the treatment of invasive breast cancer in men and women, the most common type of breast cancer, following surgery and/or radiation and for preventing invasive breast cancer in women at high risk for developing it.Nolvadex dosage
Tamoxifen also is used for the treatment of women following surgery and radiation for a less common type of breast cancer called ductal carcinoma in situ (DCIS or intraductal carcinoma). Women who have had DCIS are at high risk for developing invasive breast cancer at a later date, and tamoxifen prevents development of the invasive cancer in almost half of the women during the first five years of treatment.
Tamoxifen is associated with blood clots leading to deep vein thrombosis and pulmonary embolism.
Tamoxifen can cause abnormalities of liver tests, reduced white blood cells, red blood cells, and platelets. Reduced platelets can lead to bleeding. Patients should keep appointments for blood work to monitor for these side effects. Patients should report any suspected side effects immediately, especially bleeding and yellowing of the skin.The dose for metastatic breast cancer treatment, DCIS, and prevention of breast cancer is 10 mg twice daily or 20 mg once daily for 5 years.
Tamoxifen increases the blood thinning effect of warfarin (Coumadin, Jantoven) and reduces blood levels of letrozole (Femara) and anastrozole (Arimidex).
Phenobarbital and rifampin may reduce blood levels of tamoxifen by increasing the breakdown of tamoxifen.

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