- The mini pill (progesterone only pill) works by thickening the mucus in the cervix, preventing sperm from getting through to fertilise the egg. In some women, it also prevents ovulation.
- It must be taken every day during the same 3 hour period, otherwise pregnancy may occur.. There are no inactive or sugar pills, so unlike the combined oral contraceptive pill, there are no breaks- you take a pill every day.
