GREEN BAY — When it comes to supplements and complying with the NFL's anti-performance enhancing drug policy, Brandon Chillar doesn't worry about anything — except his aim when filling up the testing cup.

"You just hope it's not (on) your hand," the Green Bay Packers linebacker said Wednesday.

While six other NFL players — most notably Minnesota Vikings run-stuffing defensive tackles Pat and Kevin Williams — aren't laughing about the four-game suspensions handed down by the league Tuesday for their violations of anti-doping rules, Chillar wasn't sympathizing, even though he's the Packers' resident "chemist" when it comes to supplements.

Chillar can often be seen mixing concoctions at his locker — mostly protein shakes, carbohydrates and antioxidants — but said he is very careful about what he ingests and makes sure he double-checks with the strength and conditioning staff, the athletic training staff or a Web site devoted to listing banned and acceptable substances under NFL policy.

"I take brands that are known to be OK with the NFL," said Chillar, who began experimenting with supplements while with the St. Louis Rams and said he has been tested "four or five times" this year by the league. "I pretty much know what I put into my body, and if I don't, I go ahead and check so I don't have any trouble.

"I don't know what (the Williamses and other players) did. They could've been taking illegal (stuff) and blaming it (on the manufacturer). I don't know. But that's why you have to watch what you put into your body. Because in the end, it is on you."

All six players were punished for using a diuretic, which can serve as a masking agent for steroids. In their appeals, some players said the banned substance Bumetanide was not listed as an ingredient in StarCaps, an over-the-counter weight-loss pill. Lawyers for Kevin and Pat Williams applied on Wednesday for a temporary restraining order so they can continue playing.

But in issuing the suspensions, the NFL reiterated the section of its policy that specifically states, "You and you alone are responsible for what goes into your body. Claiming that you used only legally available nutritional supplements will not help you in an appeal. ... Even if they are bought over-the-counter from a known establishment, there is currently no way to be sure that they contain the ingredients listed on the packaging or have not been tainted with prohibited substances ...

"If you take these products, you do so AT YOUR OWN RISK! For your own health and success in the league, we strongly encourage you to avoid the use of supplements altogether, or at the very least to be extremely careful about what you choose to take."

That's why Packers coach Mike McCarthy has his players check with strength coaches Rock Gullickson and Mark Lovat before taking anything that could put them at risk for suspension. The Packers' opponent this week, the Houston Texans, lost long-snapper Bryan Pittman to a four-game suspension Tuesday.

"We haven't had a problem so far," McCarthy said. "And hopefully we won't."

The Packers haven't had a player suspended for performance-enhancing drugs since linebacker Jude Waddy was suspended four games in 1998 for testing positive for steroids. According to a study conducted by the San Diego Union-Tribune this offseason, only five other Packers players have been linked to steroids: Offensive lineman Mike Wahle, who was expelled from the U.S. Naval Academy for alleged steroid use; offensive linemen Mike Ariey and Keith Uecker in 1989; offensive lineman Tony Mandarich, who recently confessed to steroid use in his biography; and offensive lineman Bill Curry in 1975.