Medication features:

  • A period delay treatment
  • Contains a synthetic form of the hormone progesterone
  • Delay period for up to 17 days


Available strengths:

5 mg


Price £17.99

Includes free private prescriptions

In stock

Delivery Time


Expected delivery date:

Wednesday, 13 December 2023

If you order within:


Next Day Delivery

Next Day

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UK Registered Pharmacy

UK Registered

Discreet & Confidential

Discreet &

  • Overview
  • FAQ
  • Side Effects
  • Patient Information Leaflet
  • Reviews

What is Norethisterone

Norethisterone is a medication containing a form of progesterone (natural female hormone), which allows a safe and effective way to delay your periods for up to 17 days. Norethisterone 5mg belongs to a class of medicines called progestogens which is designed to give you control over menstruation. It can help prevent or lessen the effects of a range of menstrual cycle disorders, including pain, heavy periods, and abnormally heavy bleeding. 

Can I buy Norethisterone 5mg online?

You can buy Norethisterone online in the UK via Click Pharmacy. Norethisterone is available in 5mg. To buy Norethisterone 5mg, please arrange a prescription from your GP or book a free and confidential appointment with one of the doctors at Click Pharmacy. They will ask you to fill in a questionnaire, which will be used to assess whether this medication is right for you, after which you will be prescribed the quantity you require.

Our service is quick, easy and discreet, and your medication will be with you the next working day.

How does Norethisterone work?

Norethisterone for period delay acts on receptors in the body with the purpose of exaggerating or mimicking the effects of the female hormone progesterone. When taken for period delay, it causes the womb lining to be sustained until the treatment is interrupted or stopped and the period is due.

What dose should I choose?

The dosage you need to take will depend on your reason for using the treatment. To delay your period as a one-off, you should take one 5mg pill three times a day starting at least three full days before your period due date. Detailed instructions are provided with the medication, and you can get more information from your doctor or by contacting our expert team at Click Pharmacy.

Any interactions of Norethisterone tablets with other drugs?

Before starting any new medication, it is crucial to inform your doctor or pharmacist of the medication that you are taking, have recently taken, or might take. This can help the prescriber determine whether the new medication is appropriate for you. For example, the effect of taking Norethisterone tablets or period delay tablets is affected when they are mixed with the following drugs:

● Medication to treat epilepsy (for instance, phenytoin, carbamazepine)
● Antibiotic medicines used to treat an infection (for example, tetracyclines, rifampicin, co-trimoxazole) 
● Antiviral medications to treat HIV (for instance, ritonavir, nelfinavir)
● Anticancer medication
● Herbal medicine containing St Johns wort (Hypericum perforatum)
● Aminoglutethimide, used to treat Cushing's Syndrome
● Ciclosporin, used for suppressing the immune system
● Non-steroidal anti-inflammatory drugs (NSAIDs), commonly used for treating pain and inflammation 
● Medicine for high blood pressure or hypertension

In addition, Norethisterone period delay tablets tend to interfere with some laboratory tests, so if you have any blood tests done, make sure to inform your primary doctor if you are taking Norethisterone. Furthermore, tell your doctor or pharmacist if you are taking other medicines not listed above, including medications without a prescription.

Warnings to consider when taking Norethisterone

Before taking Norethisterone 5mg, keep in mind the following warnings:

  • Norethisterone may cause common side effects or changes in your menstrual cycle, such as spotting, headaches or irregular periods.
  • If you suffer from severe side effects that haven't resolved, consult your doctor immediately.
  • People with certain medical conditions such as breast cancer, liver disease, liver tumour or vaginal bleeding should avoid Norethisterone.
  • It would be best not to use Norethisterone for long-term to delay periods.
  • You may suffer from side effects such as blood clotting disorders, low cholesterol levels, high blood pressure, diabetes and depression.
  • Do not overdose on Norethisterone; it may cause vomiting, nausea, lateral vaginal bleeding or breast enlargement.

Alternative to Norethisterone

If Norethisterone does not work for you or you have been advised not to take it, under these circumstances, you can opt for an alternative such as Provera. For further information on the difference between provera and Norethisterone, read here

Another alternative to Norethisterone is a combined contraceptive pill such as Microgynon. With the help of a combined oral contraceptive pill, you can delay your period. However, you must take the combined oral contraceptive pill for at least a month before your current menstrual cycle. To delay your period, you must take the combined contraceptive pill for two months. This means you should not have a 7-day pill-free break or use your inactive pills.

Norethisterone and blood clotting

Taking Norethisterone can increase the possibility of blood clots or thrombosis. It generally is a low risk. However, it is essential to note that hormonal medicines, including Norethisterone, may increase the risk of clot formation, especially in people with factors of obesity, smoking and clotting disorder. Individuals taking Norethisterone must consult a healthcare provider about the potential risk factors associated with norethisterone. 

How long can I take Norethisterone for?

Norethisterone are effective at delaying periods for up to 17 days. They are not suitable for long term use.

How often should I take Norethisterone?

To delay your period for up to 17 days, you should take one 5mg tablet three times a day every day.

When should I begin taking Norethisterone to delay my period?

To effectively delay your period, it is advised to begin taking Norethisterone 3 days prior to the day you want to delay your period.

After using Norethisterone how long does it take to return to my normal menstrual cycle?

After completing your treatment you may experience irregular periods. It should take around 2 months for your menstrual cycle to return to normal.

Is Norethisterone safe to be used by breastfeeding mothers?

Although Norethisterone generally causes no harm to the baby, you should consult a GP, pharmacist, or midwife before starting your treatment.

As with any medication, there can be side effects to consider, which vary in severity. Side effects associated with Norethisterone include:

Common side effects:

  • Changes in vaginal discharge
  • Breakthrough bleeding
  • Unusual vaginal bleeding
  • Dizziness and confusion
  • Breast tenderness
  • Stomach problems
  • Visual disturbances 
  • Fatigue
  • Water retention
  • Dry mouth
  • Changes in appetite
  • Liver problems
  • Changes in sex drive

Serious Side effects:

  • Wheezing
  • Feeling faint
  • Skin rash
  • Swelling of hands or feet
  • Difficulty breathing
  • Facial swelling

Taking Norethisterone can cause blood clots. If you experience any such symptoms of a blood clot, stop taking norethisterone immediately.

If you would like further details on the possible symptoms, don’t hesitate to get in touch by email or phone. Our experts will be on hand to answer any queries you may have. You can also check the patient information leaflet for more details.

Always read the patient information leaflet before starting your treatment. The patient information can be found here.

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