how effective is the implanon

The Implanon contraceptive implant is highly effective, with an effectiveness rate of over 99.9%. This means that less than 1 woman out of 1,000 using Implanon for a year is likely to become pregnant. Clinical studies and long- term marketing data show a Pearl Index (a measure of pregnancy rate) of around 0.006 to 0.01, indicating extremely low failure rates. Implanon works mainly by preventing ovulation, thickening cervical mucus to block sperm, and thinning the uterine lining to prevent implantation. It provides reliable contraception for up to three years and fertility typically returns quickly after removal.