Contraindications and Precautions for Norethindrone Use

Contraindications

• The American Academy of Dermatology states that norethindrone is contraindicated in pregnancy, as it is a Category X medication, and also in patients with active or history of blood clots, such as deep vein thrombosis, pulmonary embolism, or stroke 1
• The American Academy of Dermatology and other guideline societies recommend that norethindrone should not be used in patients with breast cancer or other hormone-sensitive cancers 1, 2
• Norethindrone is contraindicated in patients with active liver disease or liver tumors, according to the American Academy of Dermatology 1
• The American Academy of Dermatology advises that norethindrone should not be used in patients with undiagnosed vaginal bleeding 1

Required Monitoring

• Before starting norethindrone, it is essential to confirm that the patient is not pregnant and to check blood pressure, as recommended by the American Academy of Dermatology and other guideline societies 1, 2
• During norethindrone use, patients should be monitored for any unusual symptoms, particularly if using for extended periods, according to Praxis Medical Insights 2

Medication Errors

• It is crucial to avoid confusing norethindrone with norethindrone acetate, as they are different medications with different potencies and dosing requirements, as noted by Praxis Medical Insights 3

Endometrial Evaluation Prior to Norethindrone Therapy in Perimenopausal Women

Pre‑Treatment Evaluation

• The American College of Radiology recommends that perimenopausal women with any abnormal uterine bleeding undergo endometrial assessment to exclude malignancy before initiating norethindrone for menstrual frequency control【4】.