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The pill or combined pill is a course of tiny tablets containing two types of hormone, oestrogen and progestogen, which women can take to prevent pregnancy.
You take the pill every day, at the same time, for 21 days, and then have a 7 day break. During this break you will have a bleed, which is similar to having a period. At the end of the 7 day break, you begin a new pack of pills.
The hormones in the pill works in several ways to prevent a woman from getting pregnant; firstly they stop eggs from being released (ovulation), secondly they thicken cervical mucous to prevent sperm from being able to reach an egg, and lastly they thin the lining of the womb so that if an egg was fertilized it would not be able to implant.
When the pill is taken correctly, which means taking it according to instructions and not taking pills late or missing any, the pill is more than 99% effective in preventing pregnancy.
Being on the pill does not interrupt sex. Research also shows that taking the combined pill provides some protection against ovarian, womb and colon cancer. Other benefits are lighter periods, reduced period pain and premenstrual symptoms, and some types of pill can help reduce acne too.
When you start taking the pill you may experience some temporary side effects, such as breast tenderness, light bleeding and mood changes.
There can also be some more serious side effects, such as causing a rise in blood pressure, and slightly increasing the risk of breast and cervical cancer if the pill is taken for a number of years.
The pill is not suitable for everyone, and it is important that the doctor prescribing it to you is aware of your medical history and any other medication you are taking. You are less likely to be prescribed it if you have high blood pressure, are a smoker or are very overweight.
Also other medications, such as antibiotics, can make it less effective and an additional method of contraception, like condoms, should be used whilst you are taking them.
Most importantly, the combined pill does not provide any protection against HIV or sexually transmitted infections like a condom does.
The combined pill is available free on the NHS. You can only get it on prescription from a doctor. This can be your GP, another GP who you have registered with for family planning services, or a doctor at a family planning or young person’s clinic.