Details:

Norethindrone is a form of progesterone, a female hormone important for regulating ovulation and menstruation.

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.

Not all brands of norethindrone are for the same uses. Some brands are for use only as contraception. Others are for use in treating endometriosis or vaginal bleeding disorders. Avoid medication errors by using only the brand, form, and strength your doctor prescribes.

Side Effect

Norethindrone may cause serious side effects. Call your doctor at once if you have:

• sudden vision loss, bulging eyes, or severe headache;

• swelling, rapid weight gain;

• unusual vaginal bleeding;

• missed menstrual periods;

• pelvic pain (especially on one side);

• a breast lump;

• a light-headed feeling, like you might pass out;

• increased thirst, increased urination;

• liver problems--loss of appetite, stomach pain (upper right side), dark urine, jaundice (yellowing of the skin or eyes); or

• signs of a blood clot--sudden numbness or weakness, problems with vision or speech, chest pain, shortness of breath, swelling or redness in an arm or leg.

Common side effects of norethindrone may include:

• irregular vaginal bleeding or spotting;

• headache;

• breast pain or swelling;

• stomach pain, bloating, nausea, vomiting;

• hair loss;

• depressed mood, trouble sleeping;

• weight gain; or

• vaginal itching or discharge.