<p>Pregnancy Category X. There are no adequate and well-controlled studies in pregnant women. If this drug is used during pregnancy, or if the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to the fetus. Women of childbearing potential should be advised to avoid becoming pregnant. Because of the potential for adverse effects on the newborn, nursing should be discontinued if Megestrol Acetate is required.</p>