Norethisterone

£24.99 GBP

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Available Strength 5mg

Available Quantity 30 60

Norethisterone is a hormone tablet that can delay your period for holidays, events or other occasions.

Start 3 days before your period is due
Delays your period while you take it
Reviewed by UK-registered clinicians
Discreet, tracked delivery

What is Norethisterone?

Norethisterone is a synthetic form of the hormone progesterone, widely used to regulate menstrual disorders such as heavy periods, endometriosis, and period delay. By mimicking natural progesterone, Norethisterone helps manage conditions caused by hormonal imbalances. It is often prescribed to delay menstruation for special occasions, trips, or important events where an unexpected period may be inconvenient. Additionally, it is used to treat premenstrual syndrome (PMS) and painful or irregular periods by balancing hormonal fluctuations.

How Does it Work?

Norethisterone works by increasing the levels of progesterone in the body, which prevents the shedding of the uterine lining and stops menstruation from occurring. By maintaining a stable level of progesterone, it helps control bleeding in cases of heavy or prolonged periods and stabilizes the endometrium in women with endometriosis. For period delay, Norethisterone is taken a few days before the expected period to postpone the natural hormonal cycle, thereby preventing menstruation until the desired time.

The drug is not a contraceptive.

How to use Norethisterone

Follow the guidance of your healthcare provider and read the instructions before use:

Take Norethisterone three times daily, starting three days before your period is due until you wish your period to resume.
Your period should come within two to three days after stopping Norethisterone.
Don't use Norethisterone to stop your period once it starts.
If you miss a dose, take it as soon as you remember, unless your next tablet is nearly due, in which case skip the missed dose and take the following amount at the regular time.
For heavy periods or endometriosis, Norethisterone may be taken daily for extended periods (up to 6 months), usually at a dose of 5mg two to three times a day. It helps reduce endometrial growth and minimize painful symptoms. Follow the dosage prescribed by your healthcare provider

Possible side effects

Some people may experience side effects from using Norethisterone tablets. Common effects include:

Nausea
Breast tenderness
Headaches
Mood changes

Rare effects include:

Blood clots
Severe allergic reactions

Stop using and consult your doctor immediately if any of the severe side effects occur.

Warnings and precautions

Not suitable for those with a history of blood clots, liver disease, or hormone-related cancers.
Consult your healthcare provider if you experience unusual side effects, such as severe headaches or changes in vision.
Norethisterone may be unsuitable for you if you are currently taking other medications.
Be sure to consult your GP for medical interactions.
Do not take Norethisterone during pregnancy.
If a dose is late or missed, you may find that you experience some light bleeding or spotting. Use some panty liners or similar items if needed.
The following can occur:Thrombosis (a blood clot in the leg or lungs). Yellowing of the skin or eyes. A significant rise in blood pressure or persistent headaches. Consult a healthcare professional if you experience these effects.

What are the ingredients in Norethisterone?

Each tablet contains 5mg of Norethisterone. Norethisterone tablets also contain lactose, maize starch, and magnesium stearate.

Frequently asked questions

Everything you need to know about Norethisterone before you start.

1. How long can I delay my period with Norethisterone?

You can delay your period for up to 10-14 days, depending on your healthcare provider's instructions.

2. When should I start taking Norethisterone to delay my period?

You should begin taking it three days before your expected period, three times a day.

3. Can I use Norethisterone for birth control?

No, Norethisterone is not typically used as a contraceptive. Other hormonal treatments are available for contraception.

4. How long should I take it for heavy periods?

Typically, Norethisterone is prescribed for up to 10 days in the middle of your cycle, but follow your healthcare provider's advice.

5. Are there any long-term risks?

Long-term use can increase the risk of blood clots or other side effects, so consult your healthcare provider for long-term management.

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How it works

Throughout your treatment, the SwiftDoctor clinical team is available to support you, answer questions, and review your progress.

Step 1

Complete your health questionnaire online in less than five minutes

Takes less than five minutes. Answer a few straightforward questions about your health history, lifestyle, and goals — all from the comfort of your home, with no GP appointment needed. Add your desired medication to your basket and make payment.
Step 2

A UK-registered clinician reviews your responses

A UK-registered clinician personally evaluates your submission to ensure Mounjaro is safe and appropriate for you. Your health is never treated as a formality.
Step 3

If eligible, your prescription is issued

If you meet the clinical criteria, your prescription is approved and prepared without delay. No waiting rooms. No repeat visits. Just a clear, straightforward process.
Step 4

Your medication is dispatched in discreet, temperature-controlled packaging directly to your address

Your medication is dispatched in plain, temperature-controlled packaging — protecting both its integrity and your privacy. Straight to your address, on your schedule.

Meet our clinical team

Dr S. Bano
Dr Bano is a co-founder of SwiftDoctor. She is an experienced General Practitioner with a special interest in obesity management, medical education, and digital health. She qualified as a doctor from the University of Nottingham in 2011 and has since built a diverse and impactful career in both clinical and educational settings.
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Nasir Ali
Mr Nasir Ali is a co-founder and the Superintendent Pharmacist at SwiftDoctor. He is a highly experienced Advanced Clinical Practitioner. With extensive experience in primary care, he has worked across GP surgeries and digital health clinics, bringing a deep understanding of both face-to-face and virtual models of care.
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Jane Eastwood
I am a Registered Nurse with 23 years’ experience – I have worked extensively in New Zealand and in the UK and I currently work as an Advanced Clinical Practitioner in the General Practice setting and I have special interests in menopause, diabetes, general practice and the older adult.
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