Comment on ‘Adverse reaction to Nexplanon^®’: author's response

Polymers for extended-release administration

“…In the case of Nexplanon implants, which contain barium sulfate, although extremely rare, patients may present an allergic reaction to barium sulfate. To date, only two cases associated with Nexplanon have been reported in the literature (Sullivan, 2012;Chaudhry, 2013;Pedroso et al, 2015).…”