What is norethindrone?
Norethindrone is a form of progesterone, a female hormone. Norethindrone prevents ovulation (the release of an egg from an ovary). This medication also causes changes in your cervical mucus and uterine lining, making it harder for sperm to reach the uterus and harder for a fertilized egg to attach to the uterus.
Norethindrone is used for birth control (contraception) to prevent pregnancy. Norethindrone is also used to treat menstrual disorders, endometriosis, or abnormal vaginal bleeding caused by a hormone imbalance.
Norethindrone may also be used for other purposes not listed in this medication guide.
What is the most important information I should know about norethindrone?
This medication can cause birth defects in an unborn baby. Do not use if you are pregnant. Use an effective form of birth control, and tell your doctor if you become pregnant during treatment.
Do not use this medication if you have any of the following conditions: a history of stroke or blood clot, circulation problems, breast cancer, abnormal vaginal bleeding, liver disease, or if you have recently had an incomplete miscarriage or abortion.
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.
Norethindrone does not protect you from sexually transmitted diseases--including HIV and AIDS. Using a condom is the only way to help protect yourself from these diseases.
What should I discuss with my healthcare provider before using norethindrone?
This medication can cause birth defects. Do not use if you are pregnant. Tell your doctor right away if you become pregnant.
Do not use this medication if you are allergic to norethindrone, or if you have:
a history of a stroke, blood clot, or circulation problems;
breast cancer;
abnormal vaginal bleeding; or
if you have recently had an incomplete miscarriage or abortion.
Before using norethindrone, tell your doctor if you have any of the following conditions. You may need a dose adjustment or special tests to safely take norethindrone.
high blood pressure or a history of heart disease;
migraines;
kidney disease;
liver disease or liver cancer;
a history of depression or mental illness;
high cholesterol or triglycide (fatty acid) levels in your blood;
asthma; or
seizures or epilepsy.
Norethindrone can pass into breast milk. Make sure your doctor knows if you are breast-feeding a baby while taking this medication.
Taking hormones can increase your risk of blood clots, stroke, or heart attack, especially if you smoke and are older than 35.