What should I know about norethindrone before taking it?

Before taking norethindrone, you should be aware that it can cause a variety of side effects, some of which can be serious. The following side effects are relatively uncommon, but you should seek immediate medical attention if you experience any of the following: symptoms of allergic reaction, including breathing difficulty, chest tightness, hives, rash, itching, or swelling of the face, mouth, lips, tongue, or throat; chest pain or a feeling of chest heaviness; shortness of breath; coughing up blood; sudden or severe headache, including migraine; depression or mood swings; lumps in the breasts or armpits; vision problems, including blurred vision, double vision, any loss of vision, vision changes, bulging eyes; speech problems, including slurred speech and slow and difficult speech; sudden loss of coordination or clumsiness; severe dizziness; fainting; vomiting; swelling in the arms, hands, fingers, lower legs, or ankles; pain, tenderness, heaviness, a warm sensation, or swelling of the calves; pain, weakness, or numbness in the legs or arms; yellowing of the eyes or skin; brown facial patches; missed menstrual periods; and sudden and severe abdominal pain.

Other potential side effects may be bothersome but are less likely to be serious. These include: changes in your menstrual flow; irregular vaginal bleeding or spotting between menstrual periods; hot flashes, tender or enlarged breasts; nausea; drowsiness; mild dizziness; mild pain, including stomach pain; mild rash; weight change; fever; weakness; mild headache; nervousness; sleeping problems, such as having trouble falling asleep or staying asleep; acne; and facial hair growth. Talk to your doctor if any of these side effects become severe or long-lasting.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.