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Curtis Danburg, spokesman for the Indians, confirms that the trainer contacted Stout for advice, but tells WebMD he won't comment farther. "This is a developing problem," Danburg says.

TwinLab spokesman Jim Swords tells WebMD that Stout is "way off base. "This supplement is used by many, many professional athletes, and we have had no complaints like this." He says the supplement "promotes lean body mass and has met all tests for safety and efficacy."

A 60-capsule bottle of Ripped Fuel costs less than $15 at a health food store in Lakewood, Ohio, a Cleveland suburb that is about a 15 minute drive from Jacobs Field. A clerk manning Doc Heben's Nutrition Center there one day this week tells WebMD that the supplement is a popular item in the store. "We sell a lot of it to body builders," says the clerk, who spoke on condition of anonymity.

The label states that a serving size is two capsules. Each capsule contains chromium, Ma Huang extract (which contains ephedrine), an extract from the seed of the Brazilian guarana bush (which contains caffeine), and the amino acid L-carnitine.

Every baseball season, one supplement or another becomes popular, Stout says. "Right now, for instance, the Boston Red Sox are all drinking Red Bull," says Stout, who says that ailing Boston pitcher Bret Saberhagen also sought his advice. "I don't have any problem with that, because it is really only ginseng tea and is harmless. There isn't any ingredient in it that can improve their performance, but they think it does, so maybe it helps."

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