Tamoxifen citrate salt is widely used in the treatment and prevention of breast cancer. It functions as a selective estrogen receptor modulator (SERM), blocking estrogen receptors in breast tissue, which helps to slow or stop the growth of estrogen-sensitive tumors. It is particularly effective in treating hormone receptor-positive breast cancer in both premenopausal and postmenopausal women. Additionally, it is used as a preventive measure for individuals at high risk of developing breast cancer. Beyond its primary use in oncology, tamoxifen citrate salt is sometimes utilized in the management of gynecomastia in men and for infertility treatment in women with anovulatory disorders. Its ability to modulate estrogen activity makes it a versatile drug in various therapeutic contexts.