Adverse reaction reports describe suspected side effects. A report does not mean the drug caused the event — co-medications, underlying disease and coincidence all contribute.
Is Contraceptive implant approved in United States?
Yes. FDA has authorised it.
Who is the marketing authorisation holder for Contraceptive implant in United States?
University of North Carolina, Chapel Hill is the originator. The local marketing authorisation holder may differ — check the official source linked above.