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Norethisterone tablets - Safe And Effective Period Delay

Norethisterone tablets - Safe And Effective Period Delay

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  • ✔️ Delays menstruation for up to 17 days when taken correctly
  • ✔️ Clinically recognised synthetic progestogen used across the UK
  • ✔️ Suitable for adult women with a regular, predictable menstrual cycle
  • ✔️ Tablets start working when taken three days before expected period
  • ✔️ Discreet, fast-access treatment available following a short online consultation

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Does Norethisterone Period Delay Actually Work?

 

Planning a holiday, a wedding, or simply a week where you'd rather not deal with your period? You're not alone. Thousands of women in the UK look for a safe, clinically recognised way to postpone menstruation each year — and norethisterone period delay tablets are one of the most widely used options available. Norethisterone is a synthetic progestogen that has been used in the UK for decades, and at Cured Pharmacy you can access it quickly and discreetly from just £9.99. If you're also exploring other aspects of your health, our women's health range covers a broad selection of products to support you at every stage.

Norethisterone tablets contain 5mg of the active ingredient norethisterone. They are taken orally and work by temporarily maintaining the hormonal conditions that prevent your period from starting. It's worth noting that these tablets are not a contraceptive — they will not protect you from pregnancy.

 

How Do Norethisterone Tablets Work to Delay Your Period?

 

Your menstrual cycle is regulated by fluctuating levels of oestrogen and progesterone. Towards the end of your cycle, progesterone levels naturally drop — and that drop triggers the shedding of the womb lining, which is your period. Norethisterone works by mimicking progesterone, keeping those levels artificially elevated so the lining stays in place.

  • Norethisterone binds to progesterone receptors in the uterine lining.
  • It maintains the secretory phase of the endometrium, preventing breakdown.
  • Menstruation is suppressed for as long as the tablets are taken.
  • Once you stop taking the tablets, progesterone levels fall and your period begins — usually within two to three days.

 

Who Should Consider Using Norethisterone Tablets?

 

Norethisterone tablets are intended for adult women who want to delay their period for a specific, time-limited reason. They are not suitable for everyone, so it's important to complete a short consultation before ordering. Broadly speaking, they may be appropriate if you:

  • Are planning a holiday, sporting event, or special occasion that clashes with your expected period.
  • Have a regular, predictable menstrual cycle and can accurately predict when your period is due.
  • Are not pregnant or breastfeeding.
  • Do not have a history of blood clots, liver disease, or certain hormone-sensitive conditions.

They are not suitable for women who are already taking hormonal contraception that contains a progestogen, as the interaction can be unpredictable. Always disclose your full medical history during the consultation.

 

How Does Norethisterone Compare to Other Period Delay Options?

 

Feature Norethisterone 5mg Combined Pill (Tricycling)
Prescription required? Pharmacy consultation GP prescription
Contraceptive effect? No Yes
Maximum delay duration Up to 17 days Varies by pill type
Suitable for non-pill users? Yes No

 

How Should You Store Norethisterone Tablets and Are They Right for You?

 

Store your norethisterone period delay tablets below 25°C in a dry place, away from direct sunlight and out of reach of children. Do not use them past the expiry date printed on the packaging. If you're unsure whether these tablets are appropriate for your situation, our pharmacists are available to help — and you can also browse our pain relief range if you're looking for support with period-related discomfort alongside your delay treatment.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Norethisterone Tablets – Safe and Effective Period Delay specifications
Treatment category Period delay / Menstrual management
Mechanism of action Synthetic progestogen; maintains endometrial lining to suppress menstruation
Effective When started 3 days before expected period; delays menstruation for up to 17 days
Suitable for Adult women (18+) with regular menstrual cycles who are not pregnant or breastfeeding
Active ingredient Norethisterone 5mg
Pack sizes 12 tablets, 30 tablets
Strengths 5mg
UK classification Prescription Only Medicine (POM) — supplied via pharmacy consultation
Drug class Progestogen
Preparation Tablet
Route of administration Oral

Specifications of Norethisterone Tablets – Safe and Effective Period Delay

 

What Is Norethisterone and What Is It Used For?

 

Norethisterone is a synthetic form of the female sex hormone progesterone, belonging to a class of medicines called progestogens. In the context of period delay, it is used to temporarily postpone menstruation in adult women who have a predictable menstrual cycle. It is taken orally as a 5mg tablet, three times a day, starting three days before the expected onset of your period.

It is important to understand that norethisterone used at this dose is not a contraceptive. It will not prevent pregnancy. If you require contraception, please speak to your GP or visit a sexual health clinic for appropriate advice.

 

What Do You Need to Know Before Using Norethisterone Tablets?

 

Before taking norethisterone, you must inform your pharmacist or prescriber of your full medical history. There are several conditions and circumstances where these tablets should not be used.

Do not take norethisterone if you:

  • Are pregnant or think you might be pregnant.
  • Are breastfeeding.
  • Have a history of blood clots (deep vein thrombosis or pulmonary embolism).
  • Have liver disease or a history of liver tumours.
  • Have had a stroke or heart attack.
  • Have undiagnosed vaginal bleeding.
  • Are allergic to norethisterone or any of the tablet's excipients.
  • Have a history of hormone-sensitive cancers, such as breast cancer.

Known drug interactions — tell your pharmacist if you are taking:

  • Rifampicin or other antibiotics that induce liver enzymes.
  • Anticonvulsants such as phenytoin, carbamazepine, or phenobarbital.
  • Ciclosporin (norethisterone may increase ciclosporin levels).
  • St John's Wort (herbal remedy that may reduce effectiveness).
  • Other hormonal medicines, including the combined oral contraceptive pill.

 

How Should You Use Norethisterone Tablets Correctly?

 

Follow the instructions below carefully. If you are unsure at any point, speak to your pharmacist before starting the course. Taking the tablets correctly is essential for them to work as intended.

  1. Begin taking norethisterone three days before your period is expected to start.
  2. Take one 5mg tablet three times daily — for example, morning, afternoon, and evening.
  3. Swallow each tablet whole with a glass of water.
  4. Try to take each dose at roughly the same time each day.
  5. Continue taking the tablets for as long as you wish to delay your period, up to a maximum of 17 days.
  6. Stop taking the tablets when you are ready for your period to begin. It should arrive within two to three days.
Indication Age Group Dose Frequency
Period delay Adults (18+) 5mg (one tablet) Three times daily
Under 18 Not recommended

If you experience breakthrough bleeding while taking the tablets, do not stop taking them abruptly — speak to your pharmacist for guidance. You may also find it helpful to explore our IBS and cramps range if you experience abdominal discomfort alongside your period.

 

What Are the Possible Side Effects of Norethisterone Tablets?

 

Like all medicines, norethisterone can cause side effects, although not everyone experiences them. Most side effects are mild and resolve once you stop taking the tablets.

Common side effects:

  • Nausea
  • Headache
  • Breast tenderness or swelling
  • Bloating or fluid retention
  • Spotting or breakthrough bleeding
  • Mood changes, including low mood or irritability

Less common side effects:

  • Acne or skin changes
  • Reduced libido
  • Dizziness
  • Insomnia
  • Changes in weight

Seek immediate medical attention if you experience signs of a blood clot, such as sudden leg pain or swelling, chest pain, shortness of breath, or sudden severe headache. These are rare but serious. If you're managing any related discomfort, our pain relief collection may offer additional support.

 

How Should You Store Norethisterone Tablets Safely?

 

  • Store below 25°C in a cool, dry place.
  • Keep away from direct sunlight and moisture.
  • Keep out of the sight and reach of children.
  • Do not use after the expiry date printed on the packaging.
  • Do not dispose of medicines via wastewater or household waste — return unused tablets to your pharmacy for safe disposal.

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy norethisterone period delay tablets online in the UK?

You can buy norethisterone period delay tablets from Cured Pharmacy, a GPhC-registered UK online pharmacy. A short clinical consultation is required before your order is approved to confirm the tablets are safe and suitable for you. Once approved, your order is dispatched discreetly and promptly.

How does norethisterone work to delay a period?

Norethisterone is a synthetic progestogen that mimics the hormone progesterone in your body. Taking it keeps progesterone levels artificially elevated, which prevents the womb lining from shedding and therefore delays your period. Once you stop taking the tablets, progesterone levels fall and your period begins — usually within two to three days.

How do I take norethisterone tablets step by step?

Start taking one 5mg tablet three times a day, beginning three days before your period is expected. Continue taking the tablets for as long as you need to delay your period, up to a maximum of 17 days. Your period should arrive within two to three days of stopping the course.

What is the correct dose of norethisterone for period delay?

The recommended dose is one 5mg norethisterone tablet taken three times daily — typically morning, afternoon, and evening. This dose should be started three days before your expected period and continued for no longer than 17 days in total. Do not exceed this dose without medical advice.

When is the best time to start taking norethisterone?

You should start taking norethisterone exactly three days before your period is expected to begin. Starting earlier than this is not necessary and starting later may mean your period begins before the tablets have had time to take effect. Knowing your cycle well is important for timing the tablets correctly.

What are the common side effects of norethisterone tablets?

Common side effects include nausea, headache, breast tenderness, bloating, and mood changes such as low mood or irritability. Some women also experience spotting or breakthrough bleeding while taking the tablets. These effects are generally mild and resolve once the course is finished.

How do I manage side effects of norethisterone?

Most side effects are mild and can be managed by taking each tablet with food to reduce nausea, staying well hydrated, and resting if you experience headaches. If side effects are severe or persistent, stop taking the tablets and speak to your pharmacist or GP. You can also explore our pain relief range for support with headaches or cramps.

Who is not suitable for norethisterone period delay tablets?

Norethisterone is not suitable for women who are pregnant, breastfeeding, or have a history of blood clots, liver disease, stroke, or hormone-sensitive cancers such as breast cancer. Women under 18 should not use these tablets without specific medical guidance. Always complete the online consultation honestly to confirm your suitability before ordering.

What happens when I stop taking norethisterone tablets?

Your period will typically start within two to three days of taking your last norethisterone tablet. The bleed may be slightly heavier or longer than your usual period, as the womb lining has been building up during the delay. This is a normal response and not a cause for concern in most cases.

Can norethisterone be used as a contraceptive?

No — norethisterone tablets at the 5mg dose used for period delay are not a reliable form of contraception. They will not protect you from pregnancy. If you need contraception, speak to your GP or visit a sexual health clinic, and you can also browse our condoms and sexual health range for additional options.

What happens if I miss a dose of norethisterone?

If you miss a dose, take it as soon as you remember — unless it is almost time for your next dose, in which case skip the missed one and continue as normal. Do not take a double dose to make up for a missed one. Missing doses may reduce the effectiveness of the tablets and increase the risk of breakthrough bleeding.

How long can you delay your period with norethisterone?

Norethisterone can delay your period for up to 17 days when taken correctly. It is not intended for long-term or repeated use as a period management strategy. If you find yourself regularly needing to delay your period, speak to your GP about longer-term hormonal options that may be more appropriate.

What are the alternatives to norethisterone for period delay?

The main alternative for women already taking the combined oral contraceptive pill is to run two or more pill packs back-to-back without a break — a method sometimes called tricycling. This should only be done under guidance from your GP or pharmacist. Norethisterone remains the most accessible option for women not currently on hormonal contraception.

Can I take norethisterone if I am on the contraceptive pill?

If you are already taking a combined oral contraceptive pill, you should not also take norethisterone for period delay — instead, speak to your GP about running your pill packs consecutively. If you are on a progestogen-only pill (mini pill), norethisterone is also not recommended without medical advice. Always disclose all current medications during your consultation.

What are the latest clinical findings on norethisterone for period delay?

Norethisterone has been used clinically in the UK for period delay for many decades and its efficacy and safety profile are well established. The NHS recognises it as an effective short-term option for menstrual postponement in suitable women. Ongoing guidance from the BNF and NHS continues to support its use within the recommended dosage parameters and duration.

How Should You Use Norethisterone Tablets?

Using norethisterone correctly is essential for it to work as intended. The tablets must be started at the right point in your cycle — too late and your period may already have begun. Follow the steps below carefully, and if you have any doubts, speak to your pharmacist before starting.

Your period should arrive within two to three days of stopping the course. If it does not, or if you experience unexpected symptoms, contact your pharmacist or GP.

What Is the Correct Dose of Norethisterone Tablets?

The standard dose for period delay in adult women is one 5mg tablet taken three times a day. This dose is not suitable for women under 18 without specific medical guidance, and the tablets should never be taken for longer than 17 days in a single course.

When Is the Best Time to Use Norethisterone Tablets?

The best time to start norethisterone is exactly three days before your period is expected. Starting earlier is unnecessary, and starting later risks your period beginning before the tablets have taken effect. Spacing your three daily doses evenly throughout the day — such as morning, midday, and evening — helps maintain steady hormone levels and reduces the likelihood of breakthrough bleeding.

Taking each tablet with food can also help minimise nausea, which is one of the more commonly reported side effects.

How Long Can You Use Norethisterone Tablets For?

Norethisterone tablets for period delay should not be taken for more than 17 days in a single course. They are intended for occasional, short-term use only — not as a long-term or repeated method of menstrual management. If you find you regularly need to delay your period, speak to your GP about whether a longer-term hormonal option might be more appropriate for your needs.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

How Should You Use Norethisterone Tablets?

Using norethisterone correctly is essential for it to work as intended. The tablets must be started at the right point in your cycle — too late and your period may already have begun. Follow the steps below carefully, and if you have any doubts, speak to your pharmacist before starting.

Your period should arrive within two to three days of stopping the course. If it does not, or if you experience unexpected symptoms, contact your pharmacist or GP.

What Is the Correct Dose of Norethisterone Tablets?

The standard dose for period delay in adult women is one 5mg tablet taken three times a day. This dose is not suitable for women under 18 without specific medical guidance, and the tablets should never be taken for longer than 17 days in a single course.

When Is the Best Time to Use Norethisterone Tablets?

The best time to start norethisterone is exactly three days before your period is expected. Starting earlier is unnecessary, and starting later risks your period beginning before the tablets have taken effect. Spacing your three daily doses evenly throughout the day — such as morning, midday, and evening — helps maintain steady hormone levels and reduces the likelihood of breakthrough bleeding.

Taking each tablet with food can also help minimise nausea, which is one of the more commonly reported side effects.

How Long Can You Use Norethisterone Tablets For?

Norethisterone tablets for period delay should not be taken for more than 17 days in a single course. They are intended for occasional, short-term use only — not as a long-term or repeated method of menstrual management. If you find you regularly need to delay your period, speak to your GP about whether a longer-term hormonal option might be more appropriate for your needs.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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Anonymous

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Susan Maskell

Never received the tablets I ordered or the amount I ordered but still got charged. Have phoned twice and spoke to someone who said someone would phone me back and nothing an emailed 4 times but nothing so in the hands of my card company now. Would not recommend this company at all.

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Samira Munir

It was good

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Anonymous

This is a miracle tablet my period has been delayed for the occasion that I was going , I had a great time at my wedding without worrying if my period is gonna come

What Are the Most Common Side Effects of Norethisterone Tablets?

Most women who take norethisterone for period delay tolerate it well, but some do experience side effects. These are generally mild and tend to resolve once the course of tablets is finished. Knowing what to expect can help you feel more prepared.

  • Nausea or stomach discomfort
  • Headache
  • Breast tenderness or swelling
  • Bloating or fluid retention
  • Spotting or breakthrough bleeding
  • Mood changes, including low mood or irritability

What Are the Less Common Side Effects of Norethisterone Tablets?

Some women experience side effects that are less frequently reported but still worth being aware of. These are not dangerous in most cases, but if they are troubling you, speak to your pharmacist.

  • Acne or changes in skin condition
  • Reduced sex drive (libido)
  • Dizziness
  • Difficulty sleeping (insomnia)
  • Changes in body weight
  • Rash or skin sensitivity

What Are the Serious Side Effects of Norethisterone Tablets?

Serious side effects are rare but require immediate medical attention. Norethisterone, like other progestogens, carries a small risk of thromboembolic events — that is, blood clots. Seek emergency medical help straight away if you notice any of the following:

  • Sudden pain, swelling, or redness in one leg (possible deep vein thrombosis)
  • Chest pain or tightness, or difficulty breathing (possible pulmonary embolism)
  • Sudden severe headache, vision changes, or weakness on one side of the body (possible stroke)
  • Yellowing of the skin or eyes (possible liver problems)

These symptoms are uncommon, but they are serious. Do not wait — call 999 or go to your nearest A&E immediately if you experience any of them.

What Should You Do If You Experience Side Effects of Norethisterone?

For mild side effects such as nausea or headache, taking each tablet with food and staying well hydrated can help. If side effects are persistent, worsening, or affecting your daily life, stop taking the tablets and speak to your pharmacist or GP as soon as possible. You should also report any suspected side effects via the MHRA Yellow Card scheme at yellowcard.mhra.gov.uk.

Can Norethisterone Interact With Other Medicines?

Yes. Norethisterone can interact with several medicines, which may reduce its effectiveness or increase the risk of side effects. Always tell your pharmacist about everything you are currently taking — including herbal remedies and over-the-counter products. Key interactions include rifampicin, anticonvulsants such as carbamazepine and phenytoin, ciclosporin, and St John's Wort. If you are taking any of these, norethisterone may not be suitable for you.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Norethisterone is a synthetic hormone (a man-made version of progesterone), which is one of the hormones that occur naturally in your body to regulate your menstrual cycle. By taking it prior to your period arriving, Norethisterone maintains your level of hormones and essentially “puts on hold” your period until you come off the tablets.

Usually taken for up to 14 days, but you should always follow the advice and prescription from your pharmacist.

No, you can only buy norethisterone tablets through a prescription. You can complete a short online consultation, and then a prescription will be given to you.

No Norethisterone tablets to delay your period are not a contraceptive. You’re going to have to keep using birth control if you don’t want to be pregnant.

Norethisterone should not be used in pregnancy. If you think you might be pregnant, stop taking the tablets at once and consult your pharmacist. Always check if you could be pregnant before you take Norethisterone tablets for delaying your period.
No, Norethisterone 5mg tablets are only in your system whilst you are taking them. Your fertility is restored as soon as you stop taking the tablets, and your periods will usually return to their regular pattern promptly.
If you miss a pill, take it as soon as you remember. If it is almost time for your dose, then skip the missed tablet and continue as normal. Skipping doses could bring on your period earlier than you wanted. If you miss a pill, take it as soon as you remember. If it is almost time for your dose, then skip the missed tablet and continue as normal. Skipping doses could bring on your period earlier than you wanted.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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Norethisterone is a synthetic hormone (a man-made version of progesterone), which is one of the hormones that occur naturally in your body to regulate your menstrual cycle. By taking it prior to your period arriving, Norethisterone maintains your level of hormones and essentially “puts on hold” your period until you come off the tablets.

Usually taken for up to 14 days, but you should always follow the advice and prescription from your pharmacist.

No, you can only buy norethisterone tablets through a prescription. You can complete a short online consultation, and then a prescription will be given to you.

No Norethisterone tablets to delay your period are not a contraceptive. You’re going to have to keep using birth control if you don’t want to be pregnant.

What happens if I get pregnant while taking Norethisterone? Norethisterone should not be used in pregnancy. If you think you might be pregnant, stop taking the tablets at once and consult your pharmacist. Always check if you could be pregnant before you take Norethisterone tablets for delaying your period. Will Norethisterone affect my fertility in the long term? No, Norethisterone 5mg tablets are only in your system whilst you are taking them. Your fertility is restored as soon as you stop taking the tablets, and your periods will usually return to their regular pattern promptly. What if I forget to take a dose of Norethisterone? If you miss a pill, take it as soon as you remember. If it is almost time for your dose, then skip the missed tablet and continue as normal. Skipping doses could bring on your period earlier than you wanted. If you miss a pill, take it as soon as you remember. If it is almost time for your dose, then skip the missed tablet and continue as normal. Skipping doses could bring on your period earlier than you wanted.