Period delay tablets like norethisterone contain a synthetic hormone that keeps your progesterone levels high, preventing your womb lining from shedding. This effectively delays your period until you stop taking the medication.

Begin taking norethisterone three days before your expected period. You’ll then take the tablets three times a day for as long as you wish to delay your period (up to 17 days).

You can delay your period for up to 17 days using norethisterone. After stopping the tablets, your period will usually start within 2–3 days.

Yes. Norethisterone is a prescription-only medicine in the UK. At YourMedicals, you’ll complete a short online consultation reviewed by a qualified clinician before a prescription is issued.

No, period delay treatment is temporary and does not affect fertility or long-term menstrual health. Your normal cycle resumes once the medication is stopped.

No. Norethisterone is not a contraceptive and will not protect you from pregnancy. If you need contraception, speak to your GP or pharmacist.

Most people tolerate norethisterone well. However, some may experience mild side effects such as nausea, breast tenderness, or headaches. Serious side effects are rare.

Norethisterone may not be suitable if you have a history of blood clots, liver problems, or certain hormone-sensitive conditions. Our clinicians will assess your suitability during the online consultation.