Tejada gave baseball two bottles of the B-12 to be tested; neither came up positive for steroids.
Palmeiro told the committee that Tejada offered the B-12 because he may have noticed that Palmeiro "needed a boost after a long, hot spring training
According to Palmeiro, he and Tejada "were near their lockers in the clubhouse when Mr. Tejada offered the B-12. ... Mr. Tejada removed the B-12 and a syringe from his locker during the conversation, and Mr. Palmeiro then put both items in his own locker."
Tejada's account is different. The shortstop told the committee he and Palmeiro discussed the supplement "while sitting on a couch in the clubhouse" and Tejada had to go home to get the B-12.
The committee's report also said:
As part of his defense at baseball's arbitration hearing, Palmeiro took and passed a polygraph test in June - during which he was never asked whether he took steroids. Asked by committee staff why steroids weren't directly addressed, Palmeiro replied: "I'm not sure. I did not set it up."
Palmeiro's B-12 shot was administered not by a teammate, but by Palmeiro's wife, Lynne. He told baseball that she had no medical training "but she frequently injected their two dogs with medication," the report said.
Tejada provided liquid B-12 to two other Orioles players - who were identified by the committee only as Player A and Player B.
Tejada said he had only enough B-12 for a dozen injections in 2004. But Player A "stated he injected Mr. Tejada approximately 40-45 times in 2004." The same player said he injected Tejada 30 to 35 times in the 2005 season - even though Tejada said he had enough only for a "handful" of injections.
Tejada said he never gave another player the vitamin before the 2005 season. But the two other players said they got it from him during 2004.
Neither Tejada nor his agent could be reached for comment.
The committee said it didn't name the other Orioles because they were too far removed from Palmeiro's case to be subjected to media scrutiny.
Tejada seemed to regard B-12, which he brought from the Dominican Republic and had been given as a child, as a remedy for various ailments. "Mr. Tejada recalled that he told them [Players A and B] that when they were not feeling well or not eating, they should take B-12," the report said.
Sun staff writers Dan Connolly and Childs Walker contributed to this article.