Toremifene citrate is primarily used in the treatment of hormone receptor-positive breast cancer in postmenopausal women. It works as a selective estrogen receptor modulator (SERM), blocking the effects of estrogen on breast tissue, which can help slow or stop the growth of cancer cells. It is often prescribed when the cancer has metastasized or spread to other parts of the body. Additionally, it may be used in certain cases to reduce the risk of breast cancer recurrence. The medication is taken orally, usually in tablet form, and treatment duration depends on the patient’s response and specific medical condition. Regular monitoring is required to assess effectiveness and manage potential side effects.