Buy Brevinor online from a trusted UK pharmacy

  • Widely-used and well-tolerated combined pill.

  • Prevents unplanned pregnancy, and can be used to reduce period pains and delay periods

  • Available from £11.95 + Prescription Fees and Delivery Costs

Our prices

Strength Quantity Price Stock
35mcg/500mcg63 tablets£11.95In Stock
Prices exclude a prescription fee. This treatment requires a quick online consultation,
which a doctor will review to determine if a prescription is appropriate.

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Dr Samantha Miller

Reviewed by Dr Samantha Miller MB ChB
(2017, University of Glasgow)
GMC number: 7561464

Information last reviewed 27/02/2021


Brevinor Summary


One tablet, once per day, taken at the same time each day

Type of Medicine

Hormonal contraceptive


Prevents ovulation, thickens mucus to make it harder for sperm to reach eggs, and prevents egg attachment to the uterus

Available Size

63 tablets

Available Strengths


Active Ingredient

norethisterone (500mg), ethinylestradiol (35mg)


From 19p per tablet

Side Effects

Can include mood changes,breast tenderness or swelling, nausea, upset stomach, spotting, breakthrough bleeding, abnormal libido, weight gain

What is Brevinor?

Brevinor is a type of combined contraceptive pill, which can be used to prevent pregnancy or to alleviate symptoms associated with the menstrual cycle i.e. mood swings, hormonal acne, period pain etc.

How does Brevinor work?

Brevinor primarily works by releasing hormones into the body which prevent ovulation. In a natural monthly cycle, the levels of oestrogen and progesterone fluctuate, causing the release of an egg from an ovary and causing the lining of the womb to thicken in preparation for pregnancy. If a pregnancy doesn’t occur, the lining breaks down and is expelled as your period. The pill works by creating an artificial cycle, preventing ovulation, thickening the mucus at the entrance to the womb to make it difficult for sperm to enter through the vagina, and thinning the lining of the womb.

Non-contraceptive uses for Brevinor

The pill regulates your periods and can reduce symptoms of PMS, and Brevinor can also be used for women who experience painful periods. It can also be used to reduce acne.

How effective is Brevinor?

Brevinor is 99% effective provided that it’s taken correctly. It’s important to read the accompanying leaflet before you start taking it so that you can be aware of factors that have an effect on the pill. These include antibiotics, forgetting to take the pill, or not starting the pack on time. Sickness and diarrhoea may also have an impact on the effectiveness of Brevinor. During these situations, it’s recommended to use an additional method of contraception. With typical use, Brevinor ends up around 91% effective, as people do make


Which ingredients can cause an allergic reaction?

With cases of less than one in a thousand, it is extremely rare for anyone to get an allergic reaction to most types of birth control. Allergic reactions can present with a rash, swelling of the face, trouble breathing, dizziness, and itchiness. Make sure to look out for these signs if you are taking the medication for the first time. Get medical right away help if you do notice them. If you have a severe lactose allergy, you might want to avoid this medication as it does contain lactose.

Active ingredients

The active ingredients contained in Brevinor are 500 micrograms norethisterone and 35 micrograms ethinylestradiol.

Inactive ingredients

The inactive ingredients are maize starch, polyvidone, magnesium stearate, lactose and E132.


What should I do if I’ve taken a pill late?

As long as you’ve taken your pill within a 12 hour window of the scheduled time, there’s no need to worry, your contraception won’t be affected and you can continue pill-taking as normal. If you’ve taken a pill more than 12 hours late, follow the packet instructions for a missed pill.

What should I do if I miss a pill?

A missed pill is defined as taking a pill more than 12 hours late or forgetting it altogether. If you miss a pill, take it as soon as you remember, even if that means taking two at the same time. With a missed pill, your contraceptive protection may be affected, so you should use an additional method of contraception for the next seven days. If you miss a pill and there are less than seven days left in your pack, you should start the next one straight away and miss the seven-day break.

Taking Brevinor for period delay

One of the advantages of taking a combined pill such as Brevinor is having more control over your menstrual cycle. Usually, you’ll take your pill every day for 21 days and when you reach the end of the pack you have a seven-day break until you start the next one. This is when you have your period. If you wish, you can skip your period for events or occasions which make it inconvenient. Simply skip the seven-day break and start taking your next pack of Brevinor right away. This means you won’t have a period. If you want to do this more than once, speak to your doctor or pharmacist for advice.

What do I do if I vomited after taking Brevinor?

If you are sick or have diarrhoea after you’ve taken your pill then it might not have been fully absorbed by your body. You should continue to take your pill as normal but use condoms for all sexual intercourse over the next seven days to ensure you are protected against pregnancy.

Do I need to take Brevinor at the same time everyday?

You should take Brevinor at the same time each day to ensure that it’s effective. Otherwise, if you forget to take a pill then it’s impossible to calculate when you should have taken it and the level of hormones in your bloodstream may fluctuate. 

How to start Brevinor

You would normally start taking Brevinor on the first day of your period. Your doctor may check to ensure that there’s no chance you could be pregnant before starting you on the pill. If you were to start the pill after the first day of your period then you are at risk of becoming pregnant. In this case, you would need to use condoms, or an additional method of contraception, for the next seven days.

Brevinor dosage

The dose of Brevinor is always the same and you should take only one tablet a day. They contain 500 micrograms of norethisterone (a progestogen) and 35 micrograms of ethinylestradiol (an oestrogen).

Do I take Brevinor every day?

Brevinor comes in a blister pack with the days of the week marked on each one. Once you start taking Brevinor, you should take it every day until you reach the end of the pack and then wait seven days until you begin the next one. This means that you take the pill for 21 days out of the month and then have a bleed in the seven-day break. 

How to take Brevinor

Brevinor should be taken at the same time each day. It doesn’t matter what time of day you take it, so set a time that’s convenient for you so that you will remember. Many women set an alarm on their phone to remind them. The pill can be taken with or without food and won’t be affected by any food or drink.

When to start taking Brevinor

If you are currently taking another contraceptive pill, you can start taking Brevinor as soon as you finish your last pack of pills. Otherwise, ideally, you should take the first pill on the first day of a naturally occurring period. You can start taking Brevinor on a different day, but you should use another contraceptive method for one week until Brevinor becomes effective.

Side Effects

Does Brevinor have any long-term effects upon fertility?

Taking Brevinor won’t have a long-term effect on your fertility. You can get pregnant as soon as you stop taking the pill, but it can take a few months for your body to adjust to having a natural cycle again.

How to cope with Brevinor side effects

The side effects that may be caused by Brevinor are temporary and should clear up after the first couple of months. The most common side effects are unpredictable breakthrough bleeding or spotting; and mood changes, breast tenderness, nausea and headaches. These side effects tend to subside after a few months of pill-taking, but if they’re troublesome, see your prescriber to discuss alternatives. Be mindful of how you are feeling and drink plenty of water and eat healthy meals to combat any signs of nausea.

Can I take Brevinor if I have migraines?

Brevinor is contraindicated in women who experience migraine with aura (visual or sensory disturbance) and is not usually recommended for those who experience migraines at all. Migraines are a risk factor for stroke, and the combined pill further increases the risk of blood clots, hence why it is not recommended. Speak to your doctor if you suffer from migraines before you start taking Brevinor. The progestogen-only pill may be more suitable for you.

Brevinor side effects

The pill can cause a variety of side effects, some minor and others more serious. Your doctor will assess your medical history and any underlying conditions before prescribing Brevinor. The combined pill is not suitable for all women. 

  • Common side effects include:
  • Breakthrough bleeding or spotting
  • Mood changes including depression
  • Headaches
  • Nausea
  • Breast tenderness or swelling
  • Upset stomach
  • Weight gain
  • High blood pressure 
  • Abnormal libido 
  • Worsening of womb disorders

There are potential health risks associated with Brevinor. These include:

  • Increased risk of a blood clot (thrombosis) 
  • Increased risk of breast and cervical cancer 
  • Potential increased risk of liver cancer 

However, the pill has shown to be slightly protective against ovarian and endometrial cancer.


Brevinor should not be taken if you:

  • Are pregnant, or think you could be
  • Are allergic to any of the ingredients
  • Or a family member have experienced a blood clot
  • Have ever had swelling or inflammation of a vein caused by a blood clot
  • Have ever had a heart attack, stroke or angina
  • Have hyperlipidaemia – a high level of fat in the blood
  • Have cancer in the breast, womb, vagina or cervix
  • Have experienced jaundice, pruritus or pemphigoid gestationis during pregnancy
  • Have a history of severe liver disease
  • Have unexplained vaginal bleeding
  • Have hepatitis C and are taking certain medications 
  • Suffer from bad migraines (migraines with aura)

If any of the following conditions apply to you then you will need to inform your doctor of this first so that they can assess whether or not Brevinor is suitable for you:

  • Asthma
  • Breast problems
  • Cardiovascular disease
  • Chloasma (brown skin discolouration)
  • Diabetes
  • Epilepsy 
  • Fibrosis in the uterus
  • Gallstones
  • Headaches or migraines
  • Hypertension (high blood pressure)
  • Irregular periods
  • Kidney disease 
  • Multiple sclerosis
  • Unexplained abdominal pain
  • Varicose veins
  • Otosclerosis (an inherited ear condition causing deafness)
  • Porphyria (a metabolic illness)
  • Any illness that gets worse during pregnancy
  • Depression or psychiatric disorder

Drug interactions

Taking antibiotics can render Brevinor ineffective. You should inform your doctor that you are taking the combined pill before being prescribed any medication. In such cases, you may be advised to use additional contraception for the duration of your treatment. Medications to treat epilepsy, HIV and hepatitis C may also interact with the combined pill.

Brevinor and pregnancy

Brevinor is designed to prevent pregnancy and should not be taken if you are pregnant. If you fall pregnant while on the pill, you should stop taking it and see your doctor right away so they can advise you what to do next. 

Brevinor and alcohol

Drinking alcohol while taking Brevinor does not produce any adverse effects. 

Treatment Options

Alternatives to Brevinor

Brevinor is a combined pill, meaning it contains both oestrogen and progestogen. There are many different formulations of combined pill, so if Brevinor doesn’t work for you, there’s always something else to try. For some women who cannot take the combined pill, the mini pill is available which contains no oestrogen, only progestogen. Alternative methods of long-term contraception include the IUD or IUS  (known as the coil), the implant, injection or patch. Barrier methods of contraception are available such as male or female condoms, a diaphragm or sponge.

Brevinor vs the mini-pill

The mini pill is also known as the progestogen-only pill and does not contain oestrogen. This may be more suitable if taking Brevinor causes you to experience side effects or if taking Brevinor is risky for you.

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