Contraceptive, implantable progestin

Implantable progestin in the form of Norplant was approved by the U.S.

Food and Drug Administration (FDA) for contraception in 1990 and the newer Norplant 2 was approved by the FDA in 1996. Made up of matchstick-sized rubber rods, this type of contraceptive is surgically implanted under the skin of the woman's upper arm, where it steadily releases a contraceptive substance (a progestin called levonorgestrel).</P> The six-rod Norplant provides protection for up to 5 years (or until it is removed), while the two-rod Norplant 2 protects for up to 3 years.

Norplant failures are rare but are higher with increased body weight (in heavier women).</P> Some women may experience inflammation or infection at the site of the implant.

Other side effects include menstrual cycle changes, weight gain, and breast tenderness.