Also Known As: Norplant, Norplant II
Norplant is a form of birth control developed by the Population Council that was first approved in 1983 in Finland, where it was manufactured by Leiras Oy Pharmaceuticals. The original Norplant consisted of a set of six small (2.4 mm Ã— 34 mm) silicone capsules, each filled with 36 mg of levonorgestrel (a progestin used in many birth control pills) implanted subdermally in the upper arm and effective for five years. The original (six capsule) Norplant's production has been phased out; USAID's contract ran until December 2006.
The original (six capsule) Norplant was approved by the U.S. Food and Drug Administration (FDA) in 1990 and marketed in the United States in 1991 by Wyeth Pharmaceuticals having been developed by Sheldon Segal. Norplant distribution in the United States ended in 2002; limited supplies still remained in the U.S. until 2004. Norplant was withdrawn from the UK market in 1999.
Norplant II (Norplant-2, Jadelle), also developed by the Population Council and manufactured by Schering Oy, consists of two small (2.5 mm Ã— 43 mm) silicone rods each containing 75 mg of levonorgestrel in a polymer matrix, instead of six capsules. It was approved May 31, 1996 by the FDA as being effective for three years; it was subsequently approved November 22, 2002 by the FDA as being effective for five years. Jadelle has not been marketed in the United States; Jadelle is the successor to the original Norplant in USAID's contract beginning January 2007.