Not a treatment for premature labour. May reveal gravidic cholestasis when prescribed beyond 1st trimester of pregnancy. Not suitable for use as a contraceptive. Discontinue & institute appropriate diagnostic & therapeutic measures if unexplained, sudden or gradual, partial or complete loss of vision, proptosis or diplopia, papilloedema, retinal vascular lesions or migraine occur during therapy. Intended to be co-prescribed w/ an estrogen product as HRT. Increased risk of developing DVT or pulmonary embolism; breast cancer w/ estrogen replacement therapy. Only be used in pregnancy during 1st trimester & only by vag route. Development of cholestatic jaundice of pregnancy or hepatocellular liver disease during 2nd & 3rd trimesters of pregnancy. Assess patient by taking personal & family medical history & physical exam prior to taking HRT (& at regular intervals thereafter). Increased bioavailability w/ concomitant food ingestion. Patients w/ conditions that might be aggravated by fluid retention (eg, HTN, cardiac disease, renal disease, epilepsy, migraine, asthma); history of depression, diabetes, photosensitivity. Perform clinical exam of breasts & pelvis where clinically indicated. May cause drowsiness &/or dizziness; caution is advised in drivers & users of machines. Mild to moderate hepatic dysfunction. Pregnancy & lactation.