What is it?
It's a tablet taken by a woman usually so that she can have sex without getting pregnant. Some pills are also taken to sort out troublesome periods. There are two main types: the combined pill (containing the hormones oestrogen and progestogen) and mini-pill (or progestogen-only pill).
How does it work?
The pill may prevent pregnancy in three ways:
• By stopping ovaries releasing eggs (ovulation).
• Thickening vaginal fluids so sperm can’t reach an egg.
• And making the womb slippery so eggs can’t stick to it.
How do you take it?
If you think you might want to go on the Pill, see your GP or Family Planning Clinic who’ll supply the best ones for you of the many different types (free).
With the combined pill, one is taken at roughly the same time each day for 21 days. Then there are seven pill-free days when you would bleed as if you were having a period.
The mini-pill is taken at exactly the same time every day - there are no pill-free days. Some women on the mini-pill find their periods become unpredictable, or even absent.
Does it have any side effects?
Women on the combined pill have easier periods: more regular and lighter, too. Often they also have less period pain and PMS. Some types can clear up spots.
Some women put on a little weight. It may be possible to switch to a different Pill if this happens.
Research also suggests that the combined Pill protects against ovarian and womb cancer, but slightly increases the risk of breast cancer. It also increases your chances of getting a blood clot. Your doctor will talk you through the pros and cons.
But remember - it's the most reliable form of contraception (after not having sex at all!) And always much safer for your body than getting pregnant.
Does the Pill always work?
When used properly, the Pill is over 99% effective.
However, it might not work if the woman misses pills out, doesn’t take them at the same time each day or gets sickness or diarrhoea.
Ask your GP or family planning clinic to explain what to do if this happens.
Further help and advice
• bbc.co.uk/health/sex/
• likeitis.org.uk
• Type in your postcode and find help in your area at ruthinking.co.uk
REMEMBER: It's against the law in the UK to have sex if you’re under 16. For more information see the Age of Consent factfile.
Effectiveness figures are from the Family Planning Association.
Disclaimer: the BBC can't be held responsible for the content of external websites.
Pictures posed by models.
