Etonogestrel birth control implant, sold under the brand name Nexplanon among others, is a device made up of a single rod containing etonogestrel which is used for birth control. It is the most effective form of reversible birth control with a one-year failure rate around 0.05%. It lasts at least three or four years with some data showing effectiveness for five years. The device is placed under the skin on the inner aspect of the non-dominant arm. Only providers who have completed specific training can place and remove the implant. Following removal, fertility quickly returns.
Nexplanon causes awful side effects like depression, nausea, and tiredness. According to Shash95 at drugs.com
"So I've had this awful device since 2nd March 2017. Thank God my appointment for removal is tomorrow, I have had a period since I had it inserted, headaches, awful nausea for the past two weeks, and feeling super depressed and tired. I would not recommend this to any woman ever! For the fact when I went to my GP and they said bleeding for 3-4 months is normal that's when I realized there's something not right! How can that be deemed normal? The longest I have gone without bleeding has been about 8 days and that's without exaggeration. The amount of money I have spent on pads, the discomfort, and I have even developed thrush due to excessive pad wear. Cannot wait to have this removed. I'm 22 and very upset about the side effects."