Etonogesteral, a progestin hormone, leads to changes in the cervical mucus and uterine lining, making it harder for sperm to reach the uterus. If conception does occur, progestin makes it harder for an embryo to attach to the uterus and can cause a miscarriage. Etonogestreal is slowly released over three years. The Nexplanon implant is radiopaque so it can be seen by your doctor with an x-ray or other imaging tool to verify the presence and location after insertion.
IMPLANON and NEXPLANON are a progestin indicated for use by women to prevent pregnancy. It is a single, rod-shaped implant containing 68 mg of etonogestrel, pre-loaded in the needle of a disposable applicator that is inserted subdermally (just under the skin) at the inner side of the non-dominant upper arm. The brand name product Implanon is no longer commercially available in the U.S., and has been replaced by Nexplanon.
