How does Levonelle 1500 work?
Levonelle 1500 prevents about 84% of expected pregnancies when it is taken within 72 hours (3 days) of unprotected sex. Levonelle 1500 will not prevent a pregnancy in every instance but the tablet is more effective the sooner after unprotected sex it is taken (it is better to take it within 12 hours rather than delay until the third day). Levonelle 1500 is thought to work by: • stopping your ovaries from releasing an egg; • preventing sperm from fertilising any egg you may have already released; or • stopping a fertilised egg from attaching itself to your womb lining. So Levonelle 1500 stops a pregnancy before it is established. It does not work if you are already pregnant.
