The only contraceptive implant currently available in the U.K. and the U.S. is called Nexplanon. This implant releases a slow, steady dose of progestin — a synthetic version of the hormone ...

etonogestrel-releasing subdermal implant (ENG implant) or Implanon®. In November 2011, Nexplanon® was released. Nexplanon has a redesigned inserter intended to minimize deep insertions.