Norethindrone acetate 5mg; scored tabs. Initially 5mg daily for 2 weeks, then increase by 2.5mg/day every 2 weeks up to 15mg/day maintenance dose. Continue for 6–9 months unless breakthrough ...

Norethindrone acetate, ethinyl estradiol; 0.5mg/2.5mcg, 1mg/5mcg; tabs. May be potentiated by CYP3A4 inhibitors (eg, erythromycin, clarithromycin, ketoconazole ...