How well does IMPLANON™ work?

If IMPLANON™ is inserted correctly, your chance of getting pregnant is very low (less than one pregnancy per 100 women who use IMPLANON™ for one year). IMPLANON™ must be removed by the end of the third year and may be replaced with a new IMPLANON™. It is not known if IMPLANON™ is as effective in very overweight women because clinical studies did not include many overweight women. Certain medicines may make IMPLANON™ less effective, and you may also need to use a barrier method of contraception while you are using these medicines.

The following chart shows the chance of getting pregnant for women who use different methods of birth control. Each box on the chart contains a list of birth control methods that are similar in effectiveness.

The most effective methods are at the top of the chart. The box on the bottom of the chart shows the chance of getting pregnant for women who do not use birth control and are trying to get pregnant.