Norethisterone is a progestogen. It stabilises the lining of the womb, which controls bleeding, and while it is being taken the lining is held in place, so a period does not start until the tablets stop.

What Norethisterone Is Used For

Heavy or irregular periods
Delaying a period for travel or an occasion
Endometriosis
Progestogen only contraception and part of HRT

Common Side Effects

Breast tenderness
Bloating and fluid retention
Headache and mood changes
Breakthrough spotting

Precautions

For delaying a period it is started a few days before the period is due and the period arrives shortly after stopping. It is not a contraceptive when used this way. Tell your doctor about previous blood clots, liver disease, migraine with aura or unexplained bleeding. Report calf pain or swelling, chest pain, breathlessness or a severe headache.

This page is general information only. It is not a substitute for advice from your doctor or pharmacist, and it does not include dosage. Always follow the directions given to you and read the leaflet inside the pack.