Generic name:estradiol and norethindrone (oral route) [ es-tra-DYE-ol, nor-ETH-in-drone-AS-e-tate ]
Drug class:Sex hormone combinations
Medically reviewed by Drugs.com. Last updated on Jan 19, 2022.
Estrogen Plus Progestin TherapyCardiovascular Disorders and Probable DementiaThe Women’s Health Initiative (WHI) estrogen plus progestin substudy reported increased risks of deep vein thrombosis (DVT), pulmonary embolism (PE), stroke and myocardial infarction (MI) in postmenopausal women (50 to 79 years of age) during 5.6 years of treatment with daily oral conjugated estrogen (0.625 mg) combined with medroxyprogesterone acetate (2.5 mg), relative to placebo.The WHI Memory Study (WHIMS) estrogen plus progestin ancillary study of the WHI reported an increased risk of developing probable dementia in postmenopausal women 65 years of age or older during 4 years of treatment with daily conjugated estrogen (0.625 mg) combined with medroxyprogesterone acetate (2.5 mg), relative to placebo. It is unknown whether this finding applies to younger postmenopausal women.Do not use estrogen plus progestogen therapy for the prevention of cardiovascular disease or dementia.Breast CancerThe WHI estrogen plus progestin substudy also demonstrated an increased risk of invasive breast cancer.Only daily oral 0.625 mg CE and 2.5 mg MPA were studied in the estrogen plus progestin substudy of the WHI. Therefore the relevance of the WHI findings regarding adverse cardiovascular events, dementia and breast cancer to lower CE plus other MPA doses, other routes of administration, or other estrogen plus progestogen products is not know. Without such data, it is not possible to definitively exclude these risks or determine the extent of these risks for other products. Discuss with your patient the benefits and risks of estrogen plus progestogen therapy, taking into account her individual risk profile.Prescribe estrogens with or without progestogens at the lowest effective doses and for the shortest duration consistent with treatment goals and risks for the individual woman.Estrogen-Alone TherapyEndometrial CancerThere is an increased risk of endometrial cancer in ..