Former Cowboys lineman Tony Casillas told a Dallas radio show on Wednesday that he and his teammates used a veterinary ointment known as DMSO during the 1990s.
"When I heard about deer antler spray, I said that's nothing. We used to use this stuff called DMSO. That's what veterinarians put on horses' muscles and we used it in the locker room. We had a bottle and you'd take it. It goes right to the blood stream," Casillas told KRLD-FM. "I'm not sure about this deer antler stuff, but it was prevalent in our locker room. It's called DMSO. You get it from the veterinarian. It's an ointment that's like anti-inflammatory. You put it on your skin and you put it on a muscle, and I guarantee you, in about 30 minutes you'd feel great. If you're going to talk about the deer antler stuff, we used DMSO and people knew it. Everyone knew about it."
The product is currently only approved for human use by the FDA as a preservative of organs for transplant and for interstitial cystitis, a bladder disease. Players were able to obtain it primarily through veterinarians, who used it as an anti-inflammatory drug on horses and other large animals.
DMSO is short for dimethyl sulfoxide and gives off a pungent smell similar to the odor of garlic or oysters.
Casillas, the No. 2 overall pick in the 1986 NFL Draft, played in the league for 12 seasons from 1986-1997.
Via USA TODAY