Nexplanon

List of products in the National Drug Code with proprietary name nexplanon. This product is a small, thin plastic rod that is inserted under the skin to prevent pregnancy. The rod slowly releases etonogestrel into the body over a 3-year period. Etonogestrel is similar to a natural hormone made in your body. It works mainly by preventing the release of an egg (ovulation) during your menstrual cycle. It also makes vaginal fluid thicker to help prevent sperm from reaching an egg (fertilization) and changes the lining of the uterus (womb) to prevent attachment of a fertilized egg. This product does not contain any estrogen. This medication may not work as well in women who are very overweight or those taking certain drugs. (See also Drug Interactions section.) Discuss your birth control options with your doctor. Using this medication does not protect you or your partner against sexually transmitted diseases (such as HIV, gonorrhea, chlamydia).