How does it work?
- It contains the hormone progestogen. This stops you ovulating, thickens the mucus in the cervix (neck of the womb) to prevent sperm reaching the egg and thins the lining of the womb so that a fertilised egg can’t implant.
What’s good about it?
- Can be taken by women who can’t take the hormone estrogen.
- You can take it if you are breastfeeding.
- Fertility (ability to get pregnant ) returns to normal when you stop taking it.
What might be the disadvantages?
- Most types of progestogen only pill need to be taken at the same time each day.
- This type of pill is not effective if taken over three hours late (or 12 hours for Cerazette) or if you have vomiting or diarrhoea.
- Periods may stop, become irregular, lighter or more frequent.
- There may be temporary side effects such as headaches, breast tenderness or acne.
- It’s important that you follow the instructions for use, or the pill won’t work effectively and you could become pregnant.
Where can I get it?
- You can get get it from your GP or local sexual health clinic.
For more information about which method to choose visit: