ABSTRACT
The implant route remains very useful, despite the allegations made in recent years by the media and some lawyers.
Implants contain a progestogen in a slow-release carrier, made either of dimethylsiloxane (as in Norplant™ (Hoechst Marion Roussel) with six implants, and the very similar two-rod Norplant II™, now called Jadelle™) or ethylene vinyl acetate (EVA; Implanon). Inserted into the medial upper arm, after an initial phase of several weeks giving higher blood levels, they deliver almost constant low daily levels of the hormone (Figure 14).
