Discontinue use in case of increase in frequency or severity of migraine. W/draw treatment if sustained clinically significant HTN develops. Consider discontinuation in acute or chronic liver function disturbances; recurrence of cholestatic jaundice which occurred 1st during pregnancy or previous use of sex steroids. Not to be used as protection against HIV infections (AIDS) & other STD. Increased risk of arterial & venous thrombotic & thromboembolic diseases eg, MI, DVT, pulmonary embolism & CVA. Chloasma especially in women w/ history of chloasma gravidarum. Irregular bleeding (spotting or breakthrough bleeding) especially during 1st mth of use. Obesity (BMI >30 kg/m
2), family history of venous or arterial thromboembolic events, prolonged immobilization, major surgery, any leg surgery or major trauma, heavy smoking especially in women >35 yr, dyslipoproteinemia, HTN, migraine, valvular heart disease, atrial fibrillation; DM, SLE, hemolytic uremic syndrome, chronic inflammatory bowel disease (Crohn's disease or ulcerative colitis) & sickle cell disease. Activated protein C resistance, hyperhomocysteinemia, antithrombin-III & protein C & S deficiency, antiphospholipid Abs (anticardiolipin Abs, lupus anticoagulant). Tumors; malignancies. Increased risk of pancreatitis in women w/ existing or family history of hypertriglyceridemia. Jaundice &/or pruritus related to cholestasis, gallstone formation, porphyria, SLE, hemolytic uremic syndrome, Sydenham's chorea, herpes gestationis, otosclerosis-related hearing loss. Reduced efficacy w/ missed doses, GI disturbances or concomitant medications. Women w/ hereditary angioedema exogenous estrogens. Avoid sun or UV radiation exposure in women w/ tendency to chloasma. Renal impairment. Stop treatment during pregnancy. Not recommended during lactation. Not indicated after menopause.