The women with PCOS will be randomized to receive the drug flutamide 125 mg/day or placebo. They will take the drug every day for six 28-day cycles. They will be asked to collect and store a urine sample once a week. They will also be asked to complete a pill diary and menstrual diary. Once a month while they are taking the flutamide/placebo, they will return to the clinic and bring their frozen urine samples. At that time they will undergo a physical exam, toxicity assessment, and blood draw.