What does it do?

Norethisterone is used to treat irregular, painful or heavy periods, premenstrual syndrome (PMS) and endometriosis. It may also be used to delay periods.

Before you start

• Tell your doctor if you have heart, liver or gallbladder problems, migraines, or high blood pressure.
• Tell your doctor if you have had a blood clot or stroke, or if you smoke.
• Women taking norethisterone may have a small increased risk of breast cancer. Tell your doctor if you, or someone in your family, has ever had breast cancer.
• Tell your doctor if you are pregnant, planning to become pregnant, or breastfeeding.

How should you take it?

Take norethisterone as directed with a glass of water.

What if you forget a dose?

Take the missed dose as soon as possible. If it is close to the time for your next dose, skip the missed dose and carry on as normal. Do not take two doses at the same time.

Can you take other medicines?

Tell your pharmacist or doctor about all medicines or treatments that you may be taking, including vitamins, herbal products (e.g. St John's wort) or recreational drugs.

What side effects might you notice?

Side Effects	Recommended action
Symptoms of a blood clot including: sudden shortness of breath, swelling or pain in one leg Symptoms of a stroke including: sudden weakness of the face, arm or leg, especially on one side, face drooping, sudden changes in vision or speech, sudden loss of balance Severe headache Chest pain	Tell your doctor immediately
Changes in periods Mood changes, headache Sore breasts Weight gain Brown patches on the face Stomach upset	Tell your doctor if troublesome

If you notice any other effects, discuss them with your doctor or pharmacist.