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NSAC: Anderson Silva's failure to disclose medication explains second positive UFC 183 drug test

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Former Ultimate Fighting Championship (UFC) middleweight champion Anderson Silva, who was already in hot water for a failed steroids test, has some more explaining to do after a positive result for the benzodiazepines oxazepam and temazepam came back in his second UFC 183 drug test.

Even though they weren't banned by the World Anti-Doping Agency (WADA).

But it was the Brazilian's failure to disclose that medication -- typically administered to treat anxiety -- that classified them as banned substances. It's not unusual for competitors to file and receive a therapeutic use exemption, something Silva did prior to UFC 134, if the situation warrants it.

Even in Las Vegas.

"Silva failed to disclose his use of one or more anabolic steroids and or one or more benzodiazepines," according to Nevada State Athletic Commission's official complaint (via MMA Junkie). "Thereby he provided false or misleading information to the commission or a representative of the commission."

More on that drug test here.

"The Spider," currently under temporary suspension pending a disciplinary hearing (more on that here), has previously denied willfully taking steroids or any other form of performance-enhancing drugs (PEDs), but has yet to respond to his second failed drug test.

Something you can expect UFC to do later today.