Comparing Implants

Characteristic	Jadelle	Implanon	Sino-Implant (II)	Norplant
Type of progestin	Levonorgestrel.	Etonogestrel.	Levonorgestrel.	Levonorgestrel.
Number	2 rods.	1 rod.	2 rods.	6 capsules.
Lifespan	Up to 5 years.	3 years.	4 years, may be extended to 5.	Up to 7 years.
Effectiveness and Client's Weight (see also Implants, Question 9)	80 kg or more: Becomes less effective after 4 years of use.	Weight has no known impact on effectiveness.	80 kg or more: Becomes less effective after 4 years of use.	80 kg or more: Becomes less effective after 4 years of use. 70–79 kg: Becomes less effective after 5 years of use.
Availability	Expected to replace Norplant by 2011.	Primarily available in Europe, Asia, and Africa. Also approved for use in United States.	Primarily available in Asia and Africa.	Being phased out of use (see Implants, Question 11).