Norinyl-1 (63)


Norinyl-1  is a combined oral contraceptive pill containg two active ingredients, norethisterone and mestranol. Taken correctly it is over 99% effective. f you’re already taking Norinyl-1 you can reorder your pill using our online doctor service.

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Product Description

What is Norinyl-1?

Norinyl-1 is one of a group of medicines called combined oral contraceptives or “the Pill”.
Norinyl-1 contains two hormones – a progestogen hormone called norethisterone and an estrogen
hormone called mestranol. These two hormones act together to prevent pregnancy from
occurring in three ways:

1) by preventing an egg being released from your ovaries;
2) by making the fluid (mucus) in your cervix thicker, which makes it more difficult for sperm to enter the womb;
3) by preventing the lining of your womb thickening enough for an egg to grow in it.

The benefits of taking the Pill include:
– one of the most reliable reversible methods of contraception if used correctly
– doesn’t interrupt sex
– usually makes your periods regular, lighter and less painful
– may help with pre-menstrual symptoms.

Norinyl-1 will not protect you against sexually transmitted infections, such as Chlamydia or HIV. Only condoms can help to do this

How to Use Norinyl-1

Norinyl-1 is a 21 day pill which is taken daily for 21 days, followed by 7 days where no pills are taken. It is recommended to take this medication at the same time each day. The blisters are marked with a day of the week, to aid with taking the medication. The pills must be swallowed whole, with water if needed.

If you miss a Norinyl-1 tablet, take a replacement tablet as soon as you remember; even if this means taking two tablets at the same time, and continue to take the course at the same time of day that you usually would. It is highly advised to take extra contraceptive precautions for the following days.

If you are sick or suffer from severe diarrhoea within two hours of taking the medication, your body may not have absorbed all of the hormones from the pill. It is advised to take a Norinyl-1 pill from a spare strip to compensate for this pill, and then carry on taking the course as normal; no extra contraception is needed. If you are suffering from persistent vomiting and severe diarrhoea, for more than 24 hours, additional precautions should be used; during and for 7 days after recovery.

It is advised to contact your doctor, family planning nurse or pharmacist for further advice, as they may recommend you to use emergency contraception.

Further information can be found on the manufacturers
Paitient Information Leaflet and printed if required.

Please see My pharmacy contraception range for alternative contraception pills.

For further information on contraception generally see the nhs contraception section.

Combined contraceptive

The combined oral contraceptive pill is usually just called “the pill”. It contains the female hormones oestrogen and progesterone, which women produce naturally in their ovaries.
The Combined pill is over 99% effective at preventing pregnancy.

The usual way to take the pill is to take one every day for 21 days, then stop for seven days, and during this week you have a period-type bleed. You start taking the pill again after seven days.
You need to take the pill at around the same time every day. You could get pregnant if you don’t do this, or if you miss a pill, or vomit or have severe diarrhoea.

Some medicines may make the pill less effective. Check with your doctor if you’re taking any other tablets.
If you have heavy periods or painful periods, PMS (premenstrual syndrome) or endometriosis the combined pill may help.

The pill does not protect against sexually transmitted infections (STIs), so using a condom as well will help to protect you against STIs.

How the combined pill works
1) prevents the ovaries from releasing an egg each month (ovulation).
2)thickens the mucus in the neck of the womb, so it is harder for sperm to penetrate the womb and reach an egg
3)thins the lining of the womb, so there is less chance of a fertilised egg implanting into the womb and being able to grow

There are many different brands of pill, made up of three main types:
Monophasic 21-day pills
This is the most common type. Each pill has the same amount of hormone in it. One pill is taken each day for 21 days and then no pills are taken for the next seven days. Microgynon, Marvelon, Yasmin and Cilest are examples of this type of pill.

Phasic 21-day pills
Phasic pills contain two or three sections of different coloured pills in a pack. Each section contains a different amount of hormones. One pill is taken each day for 21 days and then no pills are taken for the next seven days. Phasic pills need to be taken in the right order. Logynon is an example of this type of pill.

Every day (ED) pills
There are 21 active pills and seven inactive (dummy) pills in a pack. The two types of pill look different. One pill is taken each day for 28 days with no break between packets of pills. Every day pills need to be taken in the right order. Microgynon ED is an example of this type of pill.

Follow the instructions that come with your packet. If you have any questions, ask your GP, practice nurse or pharmacist.

What to do if you miss a pill

If you continue to be sick, keep using another form of contraception until you’ve taken the pill again for seven days without vomiting.

Who can use the combined pill
If there are no medical reasons why you cannot take the pill, and you don’t smoke, you can take the pill until your menopause. However, the pill is not suitable for all women. To find out whether the pill is right for you, talk to your GP, practice nurse or pharmacist.

You should not take the pill if you:

are pregnant
smoke and are 35 or older
stopped smoking less than a year ago and are 35 or older
are very overweight
take certain medicines (ask your GP or a health professional at a contraception clinic about this)

You should also not take the pill if you have (or have had):

thrombosis (a blood clot) in a vein, for example in your leg or lungs
stroke or any other disease that narrows the arteries
anyone in your close family having a blood clot under the age of 45
a heart abnormality or heart disease, including high blood pressure
severe migraines, especially with aura (warning symptoms)
breast cancer
disease of the gallbladder or liver
diabetes with complications or diabetes for the past 20 years

Risks of taking the combined pill
There are some risks associated with using the combined contraceptive pill. However, these risks are small and, for most women, the benefits of the pill outweigh the risks.

Blood clots
The oestrogen in the pill may cause your blood to clot more readily. If a blood clot develops, it could cause:

deep vein thrombosis (clot in your leg)
pulmonary embolus (clot in your lung)
heart attack
The risk of getting a blood clot is very small, but your doctor will check if you have certain risk factors that before prescribing the pill.

The pill can be taken with caution if you have one of the risk factors below. It is unlikely you would be advised to take it if you have two or more risk factors.
These include:

being 35 years old or over
being a smoker or having quit smoking in the past year
being very overweight (in women with a BMI of 35 or over, the risks of using the pill usually outweigh the benefits)
having migraines (you should not take the pill if you have severe or regular migraine attacks, especially if you get aura or a warning sign before an attack)
having high blood pressure
having had a blood clot or stroke in the past
having a close relative who had a blood clot when they were younger than 45
being immobile for a long time – for example, in a wheelchair or with a leg in plaster
Research is ongoing into the link between breast cancer and the pill. Research suggests that users of all types of hormonal contraception have a slightly higher chance of being diagnosed with breast cancer compared with women who do not use them. However, 10 years after you stop taking the pill, your risk of breast cancer goes back to normal.

Research has also suggested a link between the pill and the risk of developing cervical cancer and a rare form of liver cancer. However, the pill does offer some protection against developing womb (endometrial) cancer, ovarian cancer and colon cancer.

Side Effects

Like all medicines, this medicine can cause side effects although not everybody gets them.
Tell your doctor or call an ambulance immediately if you experience any of the following
symptoms of an allergic reaction after taking this medicine. Although they are rare, the
symptoms can be severe and you may need urgent medical attention or hospitalisation.
 Sudden wheeziness, difficulty in breathing, chest pain, fever, sudden swellings, rash or
itching (especially affecting the whole body).
Stop taking Norinyl-1 and contact your doctor straight away if you notice any of the
following serious side effects. These may be signs of a blood clot.
 you are coughing up blood
 you have swelling or tenderness in your stomach
 you have a sudden sharp or severe pain in the chest
 you suddenly become short of breath or find breathing is painful
 you have painful or inflamed veins in your legs
 you have a first attack of migraine (a bad headache with sickness)
 you have migraines which get worse, especially if your sight is affected, you see flashing
lights, your limbs feel weak, you lose the sensation or feel a different sensation in your
limbs, or you have a fit
 you have sudden and unusual severe headaches
 you experience dizziness or you faint
 you develop a problem with your sight or speech.
Other side effects Norinyl-1 may cause are:
 feeling sick
 stomach upset
 weight gain
 changes in appetite
 changes in the way your body breaks down sugars, fats or vitamins
 headache
 high blood pressure
 depression
 swollen or sore breasts
 change in sex drive
 worsening of womb disorders
 irregular vaginal bleeding

For a full list of side effects see
Paitient Information Leaflet and printed if required

Further Information

Further information can be found on the manufacturers
Paitient Information Leaflet and printed if required.