Etonogestrel

Etonogestrel is a medication which is used as a means of birth control for women.[2][3][10][11] It is available as an implant placed under the skin of the upper arm under the brand names Nexplanon and Implanon, and in combination with ethinylestradiol, an estrogen, as a vaginal ring under the brand names NuvaRing and Circlet.[12] Etonogestrel is effective as a means of birth control within 8hours of insertion&... [wikipedia]