Toremifene generally refers to Toremifene Citrate Tablets, a drug that is used after menopause. Toremifene Citrate Tablets is an antitumor drug, a tamoxifen derivative, which can bind to estrogen receptor and produce estrogen-like and anti-estrogenic effects or both. Clinical trials have shown that Toremifene Citrate Tablets has non-estrogen-dependent antitumor effects, and is therefore suitable for postmenopausal women with estrogen receptor-positive or unspecified metastatic breast cancer. Side effects such as flushing, vaginal bleeding, fatigue and nausea, itchy rash, dizziness and excessive sweating are common with Toremifene Citrate Tablets, and patients who have previously suffered from endometrial hyperplasia or severe liver failure should not take this medication long-term. People who are allergic to this drug also need to disable this drug. Patients with bone metastases are at risk of developing hypercalcemia during the initial phase of treatment. As a prescription drug, Toremifene Citrate Tablets must be used under the supervision of a doctor.