What is Norethisterone and how does it work?

Norethisterone tablets are used to treat various menstrual cycle issues and commonly used to delay periods. The active ingredient is Norethisterone, a synthetic version of progesterone.

Rather than allowing progesterone levels to fall as they normally would before your period, it mimics the effects of female hormones in the body by keeping progesterone levels up, sustaining the uterus lining.

This inhibits ovulation, delaying the uterus from shedding its lining and thus preventing your period.

How and when should I take Norethisterone?

The recommended dose for women of childbearing potential is 5mg, three (3) times a day, with water. It is recommended to start taking the tablets three (3) days before your expected period cycle. Do not take the pills for more than 17 days or over an extended period of time as it can have side effects on your hormone balance.

How soon after stopping will I get my period?

Your period should come within 2-3 days after completing your course of Norethisterone.

What if I don't get my period after stopping treatment?

After ceasing the tablets, it may take a few days for your body to adjust to the changes in hormone levels. If you don’t get your period within a week after completing the course, take a pregnancy test to rule out pregnancy or seek advice from your GP.

Can I take Norethisterone?

Norethisterone is NOT ALWAYS suitable for all women. You should not take Norethisterone if:

• You are pregnant or suspect that you could be
• You are breastfeeding
• You have abnormal vaginal bleeding that hasn’t been determined by your doctor
• You have a history of genital or breast cancer
• You have a history of angina, a heart attack or stroke caused by blood clot
• You have thromboembolism
• You have liver problems or a history of liver cancer
• You have ever experienced jaundice, severe itching or blistering skin rash (Pemphigoid Gestationis) during pregnancy
• You have a rare metabolic disorder called Porphyria

If you have other conditions that are not listed above or are unsure, kindly check with your GP whether or not it is safe for you to take this course.

Will Norethisterone protect me against pregnancy?

Norethisterone is not a contraceptive and hence will NOT protect you from pregnancy. Consult your GP for suitable contraceptive alternatives.

When should I take Norethisterone?

You should start taking Norethisterone three (3) days before your period is due. Your period should come within 2-3 days after completing the course.

What are the side effects of Norethisterone?

As you would not be taking the tablets for an extended amount of time, side effects are limited. Here are common side effects in some cases:

• Rashes
• Itching
• Dizziness
• Headaches
• Nausea
• Breast tenderness

Consult your GP if you are unsure or if the side effects worsens.

Information Leaflet

Always read the patient information leaflet before commencing treatment.

View the patient information leaflet for Norethisterone 5mg.