page_title: Etonogestrel birth control implant
section_title: Device description
hierarchical_section_title: Etonogestrel birth control implant / Device description
caption_attribution_description: English: extracted Implanon, a implant that works as a contraceptive for a long time
context_page_description: Etonogestrel birth control implant, sold under the brand name Nexplanon among others, is a device made up of a single rod containing etonogestrel which is used for birth control. It is the most effective form of reversible birth control with a one-year failure rate around 0.05%. It lasts at least three or four years with some data showing effectiveness for five years. The device is placed under the skin on the inner aspect of the non-dominant arm. Only providers who have completed specific training can place and remove the implant. Following removal, fertility quickly returns.
  Common side effects include menstrual changes including irregular bleeding, with approximately one third of women reporting no menstrual periods. It should not be used by anyone with current breast cancer. It is not recommended in people with liver disease.The etonogestrel implant is a type of long-acting reversible birth control. It works by stopping ovulation, thickening the mucus around the opening of the cervix, and altering the lining of the uterus.
  Etonogestrel implants were approved for medical use in Indonesia in 1998 and in the United States in 2006.
context_section_description: Nexplanon/Implanon consists of a single rod made of ethylene vinylacetate copolymer that is 4 cm long and 2mm in diameter. It is similar to a matchstick in size. The rod contains 68 mg of etonogestrel (sometimes called 3-keto-destrogestrel), a type of progestin. Peak serum etonogestrel concentrations have been found to reach 781–894 pg/mL in the first few weeks, gradually decreasing to 192–261 pg/mL after 1 year, 154–194 pg/mL after 2 years, and 156–177 pg/mL after 3 years, maintaining ovulation suppression and contraceptive efficacy. Serum levels maintain relatively stable through 36 months, which implies that the method may be effective for longer than 3 years.
  Although not formally approved by the manufacturer for more than 3 years, studies have shown it remains a highly effective contraceptive for 5 years.
  It is a type of progestogen-only contraception.
caption: A removed rod
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