 Fosfestrol sodium is also used to a lesser extent by oral administration initially at a dosage of 360 to 480 mg three times per day in the treatment of prostate cancer.Maintenance doses of 120 to 240 mg three times per day may be used and can be gradually reduced to 240 mg/day.Fosfestrol is available in the form of solutions for intravenous administration and tablets for oral administration.