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Norethisterone is a medication used to delay periods for up to 17 days. After stopping the treatment your period should return within 2-3 days.

Learn more about Norethisterone or ask our pharmacist

What is Norethisterone?

Norethisterone is a period delay medication. Period Delay Tablets are a prescription treatment, used to delay your next period for up to 17 days. They contain an ingredient called a progestogen, which is similar to the natural female hormone progesterone. 

How do you take Norethisterone?

e-Surgery offers period delay tablets for up to 17 days. 

These are normally taken THREE times DAILY,  starting from 3 days before the expected onset of period.  

Always make sure you follow the directions given to you by the prescribing doctor. 

Side effects of Norethisterone?

Like with all medication, there is a risk of side effects when taking period delay tablets.  

Very rarely, period delay tablets may cause a severe allergic reaction which can be life-threatening in some cases. You can get some or all of the following symptoms: 

  • wheezing 
  • difficulty breathing 
  • feeling faint 
  • swelling of the face or tongue 
  • swelling of the hands and feet 
  • intense itchy skin rash. 
  • If you think you are reacting badly to the medicine, get emergency medical help immediately. 

For a full list of side effects associated with period delay tablets, read the patient information leaflet here. 

Interactions with alcohol and food?

Norethisterone does not interact with alcohol or food.  

Any interactions with other drugs?

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.
This includes the following medicines, as the effect of period delay tablets may be altered when they are taken at the same time: 

– Medicines to treat epilepsy (e.g. phenytoin, carbamazepine)
– Antibiotic medicines to treat an infection (e.g. tetracyclines, rifampicin, co-trimoxazole) – Antiviral medicines to treat HIV (e.g. ritonavir, nelfinavir) 

– Anticancer medicines
– Herbal preparations containing St John’s wort (Hypericum perforatum)
– Aminoglutethimide, sometimes used in Cushing’s Syndrome.
– Ciclosporin (for suppressing the immune system)
– Non-steroidal anti-inflammatory drugs (NSAIDs) for treating pain and inflammation – Medicines for high blood pressure. 

Period delay tablets can also interfere with some laboratory tests, so tell your doctor if you are having any blood tests or hospital investigations.
Tell your doctor or pharmacist if you are taking any other medicines not listed above, including those bought without a prescription. 

Is there any reason why I would not be able to take Norethisterone?

Psychiatric disorders 

Some women using hormonal contraceptives including period delay pills have reported depression or depressed mood. Depression can be serious and may sometimes lead to suicidal thoughts. If you experience mood changes and depressive symptoms contact your doctor for further medical advice as soon as possible. 

Risk of Venous Thromboembolism (VTE) 

All women have a small chance of having a blood clot in the veins of the leg, in the lung or other part of the body. The chances of getting a clot are very slightly higher if you are taking a hormone medicine. You are more likely to get a clot whether or not you are taking period delay tablets if you: 

– are very overweight
– have systemic lupus erythematosus. (This is a condition where the immune system attacks healthy tissues, typically causing symptoms such as painful joints and muscles, tiredness, fever and rashes).
– have had a blood clot in the veins or lungs before
– have relatives who have had blood clots
– are unable to move for long periods of time (for example after an operation)
– have a serious injury or have major surgery
– have a history of repeated miscarriage. 

Tell your doctor if you have just had an operation or if you are going to have an operation while taking period delay tablets. Section 4 of this leaflet (‘Possible side effects’) also has more information on the warning signs of blood clots. 


Why should I take Norethisterone?

Periods can be inconvenient. Norethisterone lets you safely delay your period so that you can focus on what’s important.  

Will Norethisterone affect my cycle?

Norethisterone won’t effect your normal cycle. Your period will commence shortly after you take the last dosage. 

Additional information


30 tablets (7 day delay), 60 tablets (17 day delay)

1 review for Norethisterone

  1. Oskar Wendowski

    Worked as advertised, with no issues.

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