This medication is used to treat men with prostate cancer, and is used with other medications and sometimes with radiation treatments. Flutamide belongs to a class of drugs known as anti-androgens (anti-testosterone). Testosterone, a natural hormone, helps prostate cancer to grow and spread. Flutamide works by blocking the effects of testosterone, thereby slowing the growth and spread of prostate cancer.
WARNINGS: Rarely, flutamide has caused severe (sometimes fatal) liver problems. Immediately tell your doctor if you develop symptoms of liver problems (such as loss of appetite, persistent nausea/vomiting, persistent stomach/abdominal pain, severe tiredness, dark urine, yellowing eyes/skin, aching muscles, joint pain). Liver problems can happen at any time while taking flutamide, but they occur most often during the first 3 months of treatment. Your doctor will tell you whether to stop or continue flutamide. Your doctor will monitor your liver function with blood tests while you take flutamide. Keep all medical and laboratory appointments. Avoid alcohol while taking flutamide.