Former Cowboy Tony Casillas used horse medication during career


Deer antler spray may be the latest but NFL players have been trying different PEDs for decades. Former Dallas Cowboys defensive lineman Tony Casillas said members of the 1990s Cowboys frequently used horse medication.

“When I heard about deer antler spray, when I heard that, I said, ‘That’s nothing,’” Casillas said on KRLD-FM 105.3.

“We used to use this stuff called DMSO. That’s what veterinarians put on horses, on a muscle, so this is stuff that you can rub, and we used it in the locker room. We had a bottle and you’d take it. It goes straight to the bloodstream. And I’m not sure about this deer antler stuff, but, I mean, it was prevalent in our locker room. It’s called DMSO.”

DMSO stands for dimethyl sulfoxide and is prescribed for animals as an anti-inflammatory.

Casillas played for the Cowboys from 1991-93 and again 1996-97. He was part of two Super Bowl winning teams.