What is Norethisterone?
Norethisterone (sometimes spelled Northisterone) is a synthetic form of the female hormone progesterone. It is used to manage menstrual cycle problems, including delaying periods, treating heavy or painful periods, endometriosis, and premenstrual syndrome (PMS).
How does it work?
Norethisterone mimics the natural hormone progesterone, helping regulate the lining of the womb and hormone balance. By maintaining stable progesterone levels, it can delay menstruation and reduce heavy bleeding or menstrual pain.
Why choose Norethisterone?
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Reliable option for delaying periods (e.g., for travel, events, or convenience).
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Effective treatment for menstrual disorders.
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Trusted prescription medicine used for decades.
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Easy-to-take oral tablet form.
Important note:
Norethisterone should only be taken under the guidance of a doctor. It is not a contraceptive, and you may still need additional contraception while taking it. Always follow the prescribed dose and treatment duration.
Directions
- Take exactly as directed by your doctor.
- Typical dose for period delay: 1 tablet (5mg) three times daily, starting 3 days before your period is due.
- To delay your period: continue taking until you wish your period to return (your period usually begins 2–3 days after stopping).
For other menstrual conditions, your doctor will advise the appropriate dose and duration.
- Swallow tablets with water.
- Do not exceed the recommended dose.
Storage:
- Store below 25°C in a cool, dry place.
- Keep tablets in original packaging.
- Keep out of sight and reach of children.
Ingredients
Active ingredient:
- Norethisterone 5mg per tablet.
Other ingredients (may vary by brand):
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Lactose monohydrate
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Maize starch
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Povidone
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Magnesium stearate
Side Effects
Norethisterone may cause side effects in some patients:
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Common: headache, nausea, breast tenderness, changes in mood.
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Menstrual changes: irregular bleeding or spotting.
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Fluid retention, bloating.
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Less common: rash, acne, dizziness.
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Rare but serious: blood clot symptoms (leg pain/swelling, chest pain, sudden breathlessness) — seek urgent medical help.
