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Norethisterone Acetate: Brands, Price & Uses in Bangladesh
Norethisterone Acetate is a synthetic progestin used mainly in gynecological and hormonal therapy.
About Norethisterone Acetate
Indications of Norethisterone Acetate
Norethisterone Acetate is a synthetic progestin used mainly in gynecological and hormonal therapy. Its indications are classified below by strength of evidence.
Established / approved uses
- Secondary amenorrhea — to induce withdrawal bleeding when pregnancy has been excluded and there is no organic pathology.
- Abnormal uterine bleeding due to hormonal imbalance, in the absence of organic pathology such as fibroids or malignancy.
- Endometriosis — for management of pelvic pain and disease-related symptoms.
Guideline-supported / combination uses
- As the progestin component of hormone replacement therapy (HRT), combined with estrogen, to protect the endometrium in women with an intact uterus.
- As the progestin component of certain combined hormonal contraceptives.
Other recognized use
- Menstrual delay — short-term postponement of menstruation for a defined period, when medically appropriate.
Norethisterone Acetate is not an antibiotic and has no role in treating infections.
Dosage & Administration of Norethisterone Acetate
Dosage of Norethisterone Acetate is individualized by indication and should be adjusted by the prescribing physician based on response.
| Indication | Typical adult dosage |
|---|---|
| Secondary amenorrhea | 2.5 mg to 10 mg daily for 5–10 days, usually started in the second half of the theoretical menstrual cycle |
| Abnormal uterine bleeding | 2.5 mg to 10 mg daily for 5–10 days, typically starting on day 16–21 of the cycle, as directed |
| Endometriosis | Usually started at 5 mg daily for 2 weeks, then increased by 2.5 mg daily every 2 weeks up to a maintenance dose of about 15 mg daily; continued for 6–9 months as advised |
| Menstrual delay | Typically 5 mg two to three times daily, started a few days before expected menstruation, continued until bleeding is permitted to occur, per physician guidance |
| Component of HRT/contraception | Dose and schedule follow the specific combination product regimen prescribed |
Pediatric use has not been established for premenarchal patients. See Use in Special Populations for renal/hepatic considerations.
Side Effects of Norethisterone Acetate
Side effects associated with Norethisterone Acetate include:
| Common | Less common / serious |
|---|---|
| Irregular or breakthrough bleeding, spotting | Venous thromboembolism (deep vein thrombosis, pulmonary embolism) |
| Nausea, bloating, fluid retention | Sudden partial or complete vision loss (requires immediate discontinuation) |
| Headache, mood changes, breast tenderness | Cholestatic jaundice or worsening liver function |
| Weight change, acne, mild hirsutism | Severe allergic/hypersensitivity reactions |
| Fatigue, decreased libido | Worsening of depression |
Patients should seek prompt medical attention for severe leg pain/swelling, chest pain, sudden shortness of breath, sudden vision changes, or signs of jaundice.
Contraindications of Norethisterone Acetate
Norethisterone Acetate is contraindicated in patients with:
- Known hypersensitivity to Norethisterone Acetate or any component of the formulation.
- Undiagnosed abnormal vaginal bleeding.
- Known or suspected pregnancy.
- Active venous thromboembolism (deep vein thrombosis or pulmonary embolism) or a history of these conditions.
- Active or history of arterial thromboembolic disease (e.g., stroke, myocardial infarction).
- Active liver disease or a history of liver tumors (benign or malignant), or significant hepatic impairment.
- Known or suspected breast cancer or other hormone-sensitive malignancy.
Frequently Asked Questions about Norethisterone Acetate
What is Norethisterone Acetate used for?
Norethisterone Acetate is a synthetic progestin used to treat secondary amenorrhea, abnormal uterine bleeding due to hormonal imbalance, and endometriosis. It is also used as part of hormone replacement therapy or certain contraceptives, and to delay menstruation when medically appropriate.
Can I take Norethisterone Acetate if I am pregnant?
No. Norethisterone Acetate is not indicated during pregnancy. If you become pregnant or suspect pregnancy while taking Norethisterone Acetate, stop the medicine and contact your physician immediately.
Is Norethisterone Acetate safe while breastfeeding?
Norethisterone Acetate passes into breast milk in small amounts. It should be used during breastfeeding only if clearly needed and your doctor believes the benefit outweighs the potential risk to your baby.
What are the serious warning signs I should watch for?
Seek immediate medical attention if you experience leg swelling or pain, chest pain, sudden breathlessness, sudden vision loss, or yellowing of the skin/eyes while taking Norethisterone Acetate, as these may indicate blood clots or liver problems.
Who should not take Norethisterone Acetate?
Norethisterone Acetate should not be used by anyone with unexplained vaginal bleeding, known or suspected pregnancy, active or past blood clots, active liver disease or liver tumors, known or suspected breast cancer, or hypersensitivity to the drug.
What should I do if I miss a dose or take too much Norethisterone Acetate?
If you miss a dose, take it as soon as you remember unless it is nearly time for the next one — do not double up. If you or someone else has taken too much Norethisterone Acetate, seek immediate medical attention or contact a poison control center.
Disclaimer
The information provided is accurate to the best of our knowledge, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy, and the absence of specific information about a drug should not be taken as an endorsement. We are not responsible for any consequences arising from this information, so please consult a healthcare professional for any concerns or questions.