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Noriday is a mini-pill containing progesterone only. It can be taken to prevent pregnancy and is over 99% effective when taken correctly.
You should take Noriday every day for 28 days and you must take it at the same time each day, or within 3 hours of this set time. There’s no pill-free break when taking Noriday, so it could be a good option if you’re unsure or do not want the 7 day pill-free break some combined pills have. As soon as you finish your current pack with Noriday, you’ll start the next one.
Mini pills like Noriday are suitable if you are over the age of 35, smoke, or are sensitive to oestrogen. The mini pill can also help provide relief from heavy or painful periods.
About Noriday
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Noriday is a progesterone-only pill (also known as the mini pill) which works to prevent pregnancy. It contains the active ingredient norethisterone, which is a synthetic version of progesterone. Noriday does not contain oestrogen, only progesterone, which makes it suitable if you are sensitive to oestrogen, or if you are over the age of 35 or smoke.
Each strip contains 28 pills which should be taken once a day at around the same time. The strip will be marked with a day of the week which you follow with no pill break in-between.
Noriday is manufactured by Pfizer.
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Noriday is a progesterone-only pill which works to prevent pregnancy by:
- thickening the cervical mucus – making it harder for sperm to reach an egg
- thinning the uterine lining – making it difficult for fertilized eggs to implant
- sometimes preventing ovulation – where your ovaries release an egg to be fertilised
Unlike some newer progesterone-only pills and combined contraceptive options, Noriday for the most part is effective in changing the consistency of cervical mucus, it indirectly stops ovulation. However it is still over 99% effective if taken correctly.
It has been found in clinical research that Noriday may help to relieve some hormone related problems, such as heavy, irregular, or painful periods. In fact, the active ingredient in Noriday is the most commonly used oral progesterone in the treatment of heavy menstrual bleeding. Some people taking Noriday may have:
- more regular periods
- less pain
- lighter periods
You may experience breakthrough bleeding when taking Noriday even though it is to be taken daily without stopping, as your body adjusts to the pill.
How long does Noriday take to work?
You will be protected from pregnancy immediately if you take Noriday on day 1 of your period. However, if you start after day 1 of your period, you will need to use additional contraception (like condoms) for the first 7 days of taking it.
How effective is Noriday?
Noriday is over 99% effective when taken exactly as it is prescribed, correctly and consistently on a daily basis. Clinical studies have shown that progesterone-only pills like Noriday have a reported failure rate of only 1% within the first year of use. If you do not use Noriday correctly, for example if you miss pills, vomit, or have diarrhoea, the pill becomes more like 97% effective.
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Make sure you take Noriday as instructed by your doctor. You should take 1 Noriday pill each day and swallow it whole with water.
The packet you take your Noriday pills from should have marked days of the week that can help you remember when to take them – you should follow the direction of the arrows on the pack. We recommend setting an alarm to help you remember when to take it.
You should not take a break between each pack of Noriday.
When to take Noriday
You can take Noriday at any time so long as you take it at the same time each day, following the arrows on your pill packet. For example, if you begin taking your first Noriday pill at 6am on a Monday, you must take it at 6am on Tuesday, and so on.
We recommend taking Noriday at a time that you know it will always be okay to take it at, for example, in the morning when brushing your teeth, or just after dinner in the evening. For Noriday to remain effective you must always take it at the same time or within 3 hours of your usual time.
We recommend setting an alarm to help you to remember when to take your next Noriday pill.
What if I miss a dose of Noriday?
If you do not take your Noriday pill and it has been:
- less than 3 hours – take it as soon as you remember and take the next one at the normal time
- 3 hours or more – you may not be protected from pregnancy, and you should use additional contraception like condoms
We recommend that you continue to take your pills as normal, and use a condom for 7 days if it has been over 3 hours since you have taken your last Noriday pill.
What if I take too much Noriday?
If you take more than 1 Noriday pill, you may not experience any problems though it is possible that you could feel sick or vomit. You may also experience vaginal bleeding or breast enlargement. If you take too many pills and are concerned, you should speak to your doctor.
What if I throw up or have diarrhoea after taking Noriday?
Noriday may not protect you from pregnancy if you are sick or have diarrhoea when taking it, especially if it’s been less than 4 hours since your last dose. You should continue to take your pills as normal but make sure to use a condom in addition to taking Noriday while you are ill, and for the next 7 days once you’re better. If your illness continues, speak to your doctor if you have concerns about the effectiveness of Noriday during this period.
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You can request Noriday from reputable online services like ZAVA. It is also available to request from your GP on the NHS. You need a prescription for Noriday, so you will need a consultation before you are able to buy it.
Can I buy Noriday online?
You can request Noriday online from regulated online doctor services like ZAVA, all you need to do is:
- Fill in a short medical questionnaire so one of our doctors can assess if Noriday is suitable for you.
- Our doctors will be in touch, and if approved you can go ahead and request Noriday, if not, they may suggest an alternative.
- Noriday will be delivered discreetly and safely to your door in unmarked packaging.
Can I buy Noriday over the counter?
No, Noriday is only available to buy if you have a prescription. This is because a doctor will need to assess your suitability before prescribing it. For example, Noriday can interact with other medications, and there are potential side effects.
If you’re looking for alternative progesterone-only contraceptives available over the counter, Hana, the ‘mini pill’ is available from ZAVA and most pharmacies. Hana contains a different kind of progesterone to Noriday but works in the same way.
Can I get Noriday on the NHS?
Yes, Noriday is available on the NHS. You can obtain it from your local GP surgery or a sexual health clinic. However you would need a consultation to get it. Whether you are prescribed norethisterone or the branded version, Noriday, depends on your local pharmacy and what your GP recommends based on your medical history.
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Like all medications, Noriday may cause side effects. Though, not everybody will experience them. Here is a breakdown of the common, less common, and rare or serious side effects to look out for.
Common side effects include:
- bleeding or spotting in between periods
- having no periods
Less common side effects include:
- irregular periods
- high blood pressure (symptoms include blurred vision, chest pain, difficulty breathing, headaches, and nosebleeds)
- mood changes
- weight fluctuations (due to water weight changes)
- changes in sex drive
- nausea or vomiting (feeling or being sick)
- skin rashes
- migraines or headaches
- sore breasts or breast tenderness
Stop taking Noriday immediately if you experience any of the following serious side effects and call 999 in an emergency:
- allergic reaction, including rash, swelling, and wheezing
- changes in your breast (including appearance of lumps) or changes in nipples
- jaundice (appearing yellow)
- sudden shortness of breath
- severe and unusual long lasting headache
- vision changes
- collapsing or fainting
- sudden weakness or numbness in the body
- severe pain the the calves (warning sign of blood clot)
You should also speak to your doctor if you experience any depression or change in mood when taking Noriday.
How long do Noriday side effects last?
Noriday side effects usually get better within the first 3 months of taking it. Your body will take this time to adjust to the hormonal changes caused by Noriday.
However, if you experience worsening or persistent side effects, you should speak to your doctor. They may suggest you come off Noriday and try an alternative contraceptive method.
What to do if you get Noriday side effects
If you experience any of the common side effects of Noriday, here are some tips on how to manage them, for example, for:
- headaches – use painkillers like paracetamol or ibuprofen, and make sure to stay hydrated
- spotting – use panty liners where possible
- nausea – take the pill with food, after dinner or before bed
If you’re having trouble with side effects, we recommend trying to adjust your pill schedule or switch to an alternative. If you experience persistent or severe side effects from Noriday, you should speak with your doctor.
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Noriday is a very effective contraceptive pill, however this does not mean it is right for everybody.
Do not take Noriday if you:
- are allergic to norethisterone or ingredients in Noriday
- have or think you may have breast, cervical, vaginal, or womb cancer
- have had chronic liver disease including tumours (past or present)
- have had jaundice or type of jaundice like Dubin-Johnson Syndrome or Rotor Syndrome
- have active liver disease or liver tumours
- have had pruritus during pregnancy
- have disorders of lipid metabolism
- have unexplained vaginal bleeding
- have never had a period or have a lack of periods
- have inflamed veins
- have thrombosis
- have heart disease
- have had a stroke
You should tell your doctor before taking Noriday if you have:
- asthma
- depression
- liver disease
- varicose veins
- high blood pressure
- epilepsy
- porphyria
- tetany (muscle twitches)
- otosclerosis
- diabetes, or a family history of it
- gallstones
- impaired carbohydrate tolerance
- migraine headaches
- heart or kidney problems
Certain medications may interact with Noriday, or Noriday may affect the way medications work, such as:
- St John’s Wort (for depression)
- carbamazepine, oxacarbazepine, phenytoin, primidone, or topiramate (for epilepsy)
- phenobarbital (for sleeplessness, anxiety and epilepsy)
- nelfinavir (for HIV)
- nevirapine and ritonavir (for HIV and AIDS)
- rifabutin, rifampicin, ampicillin, or doxycycline (for bacterial infection)
- grisofulvin (for fungal infection)
- modafinil (for narcolepsy)
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If you do not think that Noriday is the right contraceptive for you, there are other options available, including other progesterone-only pills or combined contraceptives.
Progesterone-only (mini pill) alternatives
Mini pills are pills which contain a synthetic progesterone hormone to help prevent pregnancy. Noriday is an example of a mini pill, however, if you find yourself experiencing side effects you may want to try an alternative. Other mini pills beside Noriday available at ZAVA include:
Combined contraceptive alternatives
If you are not sensitive to oestrogen, are under the age of 35 and do not smoke, a combined contraceptive pill may be suitable for you. The difference between a mini pill and a combined contraceptive is that the combined contraceptive contains both synthetic oestrogen and progesterone hormones to help prevent pregnancy. You may also want to try combined contraceptives if you suffer from acne, or heavy menstrual bleeding.
Some combined contraceptives available at ZAVA include:
To browse more combined contraceptive pills available at ZAVA, visit our contraceptive treatment page.
Other hormonal options
If you are finding that you do not want to take a pill or have trouble keeping track of taking your contraceptive pill, there are alternative options available for preventing pregnancy, including:
- vaginal ring
- contraceptive implant
- contraceptive injection
- intrauterine system (IUS)
- contraceptive patch
Non-hormonal contraceptives
If you are unsure whether using hormonal contraception is right for you, there are non-hormonal contraceptive methods available, such as:
- condoms
- copper intrauterine device (IUD)
- diaphragms
➤ You can find out more information by checking out our guide to different types of contraceptive methods.
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Yasmin may be a more suitable option compared to Noriday if you find you are having side effects when taking Noriday. Please note that Noriday only contains progesterone, whereas Yasmin contains both synthetic oestrogen and progesterone.
How they work
Both Yasmin and Noriday are 99% effective when taken correctly, and they work in similar ways to prevent pregnancy by stopping ovulation as well as thickening cervical mucus and thinning the uterine lining to prevent pregnancy.
When to take them
Yasmin and Noriday should both be taken daily, so if you are struggling with sticking to a pill schedule, Yasmin also requires one. However, with Yasmin, you are safe to take the pill within 12 hours of your regular time if necessary, whereas with Noriday you must take it within 3 hours of your usual time.
Although it is recommended to take both at the same time each day, there is a little bit more flexibility with Yasmin.
Pill breaks
If you prefer to have a pill break, this is not possible with Noriday. However with Yasmin you are required to take a pill break for 4 days at the end of each pack for a withdrawal bleeding period.
Non active ingredients
The only difference between Yasmin and Noriday is that Yasmin has talc, whereas Noriday does not.
Common side effects
Here is a breakdown of the differences between the common side effects in Yasmin and Noriday:
Yasmin Noriday Changes in bleeding, breast pain, headache, mood changes, nausea, change in discharge, thrush and breast tenderness
Bleeding, spotting, or having no periods at all
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If you have been experiencing unwanted effects from taking Noriday, Microgynon may be a more suitable option for you. However please note that Noriday only contains progesterone, Microgynon on the other hand contains both a synthetic oestrogen and progesterone.
Here are some of the key differences between Microgynon and Noriday to help make your decision based on:
How they work
Both Noriday and Microgynon are 99% effective when taken correctly, and they work in similar ways to prevent pregnancy by stopping ovulation as well as thickening cervical mucus and thinning the uterine lining to prevent pregnancy.
When to take them
Microgynon and Noriday must be taken daily, with Microgynon still requiring a consistent routine. However, Microgynon allows a 12-hour window for a missed dose, whereas Noriday must be taken within 3 hours of the usual time. Although both pills must be taken at the same time each day, Microgynon provides more flexibility
Noriday does not require a pill break, whereas with Microgynon you still do take a pill for 4 days at the end of your pack except it does not contain any medication, this is called a placebo pill. During this time you will have a withdrawal bleed.
Non active ingredients
The only difference between Microgynon and Noriday is that Microgynon contains talc, while Noriday does not.
Common side effects
Here is an overview comparison of common side effects of Microgynon vs Noriday:
Microgynon Noriday Nausea, stomach ache, weight gain (from water retention), headaches, mood changes, sore or painful breasts
Bleeding, spotting, or having no periods at all
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You may find Zoely a suitable alternative contraceptive pill to Noriday if you are not sensitive to oestrogen because it is a combined oral contraceptive containing both oestrogen and progesterone. Here are some of the key differences between Zoely and Noriday to help make your decision based on:
How they work
Zoely and Noriday are both 99% effective when taken correctly. They also work in similar ways to prevent pregnancy by:
- stopping ovulation
- thickening cervical mucus
- thinning the uterine lining
When to take them
Both Zoely and Noriday need to be taken every day, but Zoely offers more flexibility. Zoely allows a 12-hour window for a missed dose, Noriday on the other hand must be taken within 3 hours of the usual time.
Non active ingredients
The only difference in non-active ingredients in Zoely and Noriday is that Noriday contains silica gel and Zoely contains talc.
Common side effects
Here is an overview of common side effects in Zoely vs Noriday:
Zoely Noriday Mood changes, headaches, changes in bleeding
Bleeding, spotting, or having no periods at all
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Frequently asked questions
How should Noriday be stored?
Noriday should be kept in its original carton and should not be stored about 25°C.
In what pack sizes is Noriday available?
Noriday is available in cartons containing 28 or 84 tablets. Both of these pack sizes are available at ZAVA.
What does Noriday look like?
Noriday pills are white and round. They have ‘SEARLE’ on one side and ‘NY’ on the other.
Can I take Noriday while breastfeeding?
Yes, you can take Noriday while breastfeeding as there is no evidence that it impacts the breast milk you produce. Make sure to still tell your family planning nurse or doctor if you are thinking of taking Noriday while breastfeeding.
Does Noriday affect your periods?
Yes, you may experience changes in your periods while on Noriday. You may see spotting in your underwear, or you may not have a period at all. If you have any concerns about the changes in your periods, speak with your doctor.
Brenda studied medicine at St Georges University of London and has most recently worked in John Radcliffe Oxford University Hospitals, covering acute and general medicine.
Meet our doctorsLast reviewed: 29 Apr 2025
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Noriday 350 microgram Tablets, emc [accessed April 2025]
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Medical management of heavy menstrual bleeding, National Library of Medicine [accessed April 2025]
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Effectiveness and efficiency rates of progestin-only pills: A comprehensive literature review, Contraception Journal [accessed April 2025]
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What is the progestogen-only pill?, NHS [accessed April 2025]
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Norethisterone, NICE/BNF [accessed April 2025]
Contraceptive pills are a reliable way of reducing your risk of getting pregnant from sex. ZAVA offers most common brands of pill, so you can order your preferred brand by visiting our contraceptive pill service page.
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