Etonogestrel implant contains a hormone that prevents ovulation (the release of an egg from an ovary). This medication also causes changes in your cervical mucus and uterine lining, making it harder for sperm to reach the uterus and harder for a fertilized egg to attach to the uterus. Etonogestrel implant is used as contraception to prevent pregnancy. The medicine is contained in a small plastic rod that is implanted into the skin of your upper arm. The medicine is released slowly into the body. The rod can remain in place and provide continuous contraception for up to 3 years. Etonogestrel implant may also be used for purposes not listed in this medication guide.
Implanon is a drug whose high composition is etonogestrel. The main role of Implanon is to prevent ovulation from occurring. In short, Implanon is classified as a contraceptive since the final effect created is prevention of pregnancy. Implanon is responsible for manipulating the main fertilization activities which could otherwise lead to pregnancy.