Notes: Nilutamide is a non-steroidal antiandrogen that is an antagonist of the androgen receptor.{41485} It reverses testosterone-induced increases in cell proliferation with an IC50 value of 412 nM in mouse mammary carcinoma cells in vitro.{41484} It has antiandrogenic activity in both intact and castrated rats, inhibiting testosterone propionate-induced prostate growth when administered at a dose of 2.5 mg/kg.{41486} Formulations containing nilutamide have been used in combination with surgical castration in the treatment of metastatic prostate cancer.