<unk>  is an antiestrogen antineoplasic agent that is FDA approved for the treatment of metastatic breast cancer in postmenopausal women with estrogen-receptor positive or unknown tumors. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include hot flashes, sweating, nausea and vaginal discharge.
Toremifene
Tasimelteon
Ospemifene
Stiripentol
Clobenzorex
Tyloxapol
Domiphen
Methapyrilene