Prompted for a reaction to Penske Racing teammate AJ Allmendinger's positive test for a proscribed substance and subsequent suspension from competition, Brad Keselowski said at New Hampshire Motor Speedway that all supplements should be outlawed.
"It's my personal belief that nothing should be allowed – nothing," Keselowski said. "I don't feel like you should be able to take Flintstone (vitamin) pills. It's my personal belief. I think you're racecar drivers; you should have to overcome it.
"I think it's a bunch of bull that you're allowed to take supplements or any of those things. I don't think that's right. I don't think any athlete should be allowed to take that, but that's my personal beliefs."
Keselowski does believe, though, that knowing the identity of a substance that triggers a positive test matters a lot.
"I think it does matter what it was," Keselowski said. "It does to me. It might not to everybody else, but it matters to me what it was, because there's always going to be that level of uncertainty that I have over any athlete or driver that performs at these levels, and what they're taking or not taking.
"It's so difficult to give a great explanation of how I feel about it, but I think that I want to believe that any performer or athlete out there would not be dumb enough to take a drug that is against the law, illegal. It just stands to reason that, if you've made it this far in the sport, you've had the knowledge to not do anything that dumb."
The issue of legal supplements is complicated. Various energy drinks, such as Red Bull, Monster, 5-Hour Energy and NOS, are current or former sponsors of NASCAR teams and drivers. Keselowski's No. 2 Dodge is sponsored by Miller Lite, and the driver consumes an occasional beer as part of his promotion of the brand.