Mayra Bueno Silva took to her Instagram and released a lengthy statement to fans announcing the failed USADA drug test, adamantly claiming she has never taken any performance-enhancing drugs. She also added that the substances she has tested positive for are consistent with medication she takes for ADHD. Silva adds that she’s fully cooperating with the United States Anti-Doping Agency (USADA) and Nevada State Athletic Commission on the matter. “To all of my fans, “It is with deep regret that I have to announce I failed a drug test that I took the week of my fight against Holly Holm . I want to begin by saying I have never in my life taken a substance to enhance my ability in or outside the cage. I have test positive for a substance that is consistent with the prescription medication I take for my ADHD