Delaying menstruation using medication is an easy and safe option taken by many women to avoid the inconvenience and common symptoms that many suffer during their period. The option to delay a period is often used around exams, weddings or travel.
Norethisterone is a synthetic version of the hormone progesterone that regulates menstruation. By taking Norethisterone, you can postpone your period for special occasions, travel, exams or other personal reasons.
Author
Dr Adam Kirk
Revision 1.0 - 17/07/2025
A period is usually triggered when the level of progesterone in the body drops, which happens when conception doesn't occur during the menstrual cycle. Norethisterone works by maintaining the level of progesterone in your body and by keeping the hormone level stable, Norethisterone effectively delays menstruation.
You’ll need to start taking Norethisterone three days before the onset of menstruation. Take one tablet three times a day for as long as you want to delay your period. You can take Norethisterone up to a maximum of 10-14 days. Your period should start 2-3 days after you stop taking the medication. Before starting, you must read the manufacturer's leaflet supplied with your Norethisterone tablets.
Norethisterone is typically recommended for women who aren’t using hormonal contraceptives and have a regular menstrual cycle. Before starting Norethisterone, your pharmacist will discuss your situation with you to ensure it’s safe and appropriate for you to use. If you have a history of blood clots, liver disease, or certain other health conditions then Norethisterone might not be suitable for you.
A consultation with a pharmacist ensures that Norethisterone is the right choice for you. Your pharmacist will review your medical history to prevent any potential risks and ensure the medication is effective and safe for you. You’ll also be able to ask the pharmacist any questions that you have about Norethisterone.
Occasional use is not believed to cause any long-term health or fertility issues but frequent or prolonged use can lead to side effects or other health concerns (see below). During your consultation, your pharmacists will be able to answer your questions on safe use based on your individual circumstances.
Common side effects of Norethisterone include:
In rare circumstances, more serious side effects like blood clots may occur.