Norethindrone is a progestin used to treat endometriosis and normalize menstrual periods. Norethindrone works by preventing the growth of the uterus' lining which stops pain caused by the uterus' lining growing in the wrong places. Norethindrone also makes the body to produce female hormones.
Norethindrone acetate is a drug used to prevent ovulation in women. It is a form of the natural hormone, progesterone. By preventing ovulation, norethindrone acetate is used as a contraceptive to avoid pregnancy. However, norethindrone acetate is also used in the treatment of menstrual disorders, vaginal bleeding, and endometriosis.
Norethindrone acetate works by altering the lining of the uterus, meaning a sperm-egg cannot penetrate the wall and impregnate the patient. Norethindrone acetate also thickens vaginal fluid, assisting this role. Patients should not take this medicine if they are pregnant, as it can cause birth defects.
Common side effects with norethindrone acetate include nausea, dizziness, menstrual changes, breast pain or swelling, and weight changes.