How does it work?

It's still not fully understood how Levonelle One Step® works because it depends on where you are in your cycle. For example: 

• It may stop an egg being released from the ovary (ovulation)
• It may prevent sperm from fertilising any egg that may already have been released
• It may stop a fertilised egg from attaching itself to the lining of the womb

Levonelle One Step® stops a pregnancy before it is established. It doesn't work if you are already pregnant. The sooner you take Levonelle One Step®, the more effective it is.

Emergency contraceptive pills are not meant to be  used as a regular method of contraception. If you're sexually active, whether you have sex occasionally or frequently, you need to choose a regular long-term method of contraception that suits you.