Generic Name: ethinyl estradiol and norethindrone (ETH in il ess tra DY ol and nor ETH in drone) Brand Names: What is the most important information I should know about ethinyl estradiol and norethindrone? • Do not use birth control pills if you are pregnant or if you have recently had a baby. • Do not use this medication if you have any of the following conditions: a history of stroke or blood clot, circulation problems, a hormone-related cancer such as breast or uterine cancer, abnormal vaginal bleeding, liver disease or liver cancer, or a history of jaundice caused by birth control pills. • You may need to use back-up birth control, such as condoms or a spermicide, when you first start using this medication. Follow your doctor's instructions. • Taking hormones can increase your risk of blood clots, stroke, or heart attack, especially if you smoke and are older than 35. • Some drugs can make birth control pills less effective, which may result in pregnancy. Tell your doctor about all the prescription and over-the-counter medications you use, including vitamins, minerals and herbal products. Do not start using a new medication without telling your doctor.