The report also said that Radomski provided Stanton with human growth hormone in the Mets clubhouse later in the 2003 season and was paid $1,600.
In his report, Mitchell said that Stanton declined to speak with his investigators.
"I've done absolutely nothing wrong," Stanton told MLB.com late Thursday night. "I've never met Radomski and couldn't even pick him out of a lineup. The reports are outrageous and unfair."
Stanton, 40, was signed to a two-year, $5.5 million contract by the Reds on Nov. 20, 2006. The free-agent deal came with a $2.5 million vesting option for 2009.
In 69 relief appearances for the Reds, Stanton was 1-3 with a 5.93 ERA in 57 2/3 innings. The left-hander has pitched for nine teams over 19 seasons and leads all active pitchers with 1,178 career relief appearances.
The Reds said that general manager Wayne Krivsky would not make a comment.
Other former Reds named in the Mitchell Report were pitchers Kent Mercker, Ricky Stone, Josias Manzanillo, Denny Neagle, Scott Schoeneweis, Ryan Franklin, Todd Williams, and Ron Villone. Former first baseman Hal Morris and catcher Benito Santiago also were included.
Reds manager Dusty Baker was still digesting the new information when reached for comment. He had not read the report, but was interviewed by investigators.
"I'm just watching it while doing other stuff. I don't have much to say. Not a lot to be said," Baker said. "I was interviewed, too, and it's a legal matter. There's not a bunch that can be said about it."
Baker was asked if his feelings toward Stanton or any implicated player would change in light of Thursday's news.
"It doesn't change anything for me," Baker said. "I don't know if [the report] is accurate or not. I'm not here to judge anybody. Who am I to judge anybody?"
Baker was interviewed by Mitchell's investigators after news of the Bay Area Laboratory Cooperative (BALCO) raids were reported. According to the report, Baker said he was "completely shocked" when made aware of allegations that Giants player Marvin Benard used steroids.
"After Baker learned of the allegations, he asked Benard if they were true," the report stated. "According to Baker, Benard admitted he had used steroids previously, but said that he had stopped. Baker did not report Benard's admission to anyone in Giants management or the Commissioner's Office."
When read the portion of the report relevant to him over the phone, Baker disputed some parts of the findings. The report mistakenly said Baker was manager of the Giants in 2003 when the BALCO scandal broke, when he was actually managing the Cubs at that time.
"Marvin admitted it after BALCO came out, but not while he was with me," Baker told MLB.com. "It's a matter of interpretation. How was I supposed to know?"
Baker's name did not appear in the section of the report regarding then Giants outfielder Barry Bonds.
The findings of the report were released at 2 p.m. ET on Thursday. Several high-profile, superstar-caliber players were among those named in the Mitchell Report, the product of a 21-month, multimillion dollar investigation that could shape decisions, prompt punitive actions against active players, and usher in the next era of the sport.
Free agent Roger Clemens, Andy Pettitte of the New York Yankees, Miguel Tejada of the Houston Astros, Eric Gagne of the Milwaukee Brewers and Paul Lo Duca of the Washington Nationals were among the most prominent former and current All-Stars to be mentioned in the lengthy report, which spans 311 pages, plus multiple exhibits, including evidence of signed checks, handwritten notes and shipping receipts.
The players listed in the paragraph above are by no means the only players listed in the report, but in MLB.com's initial, quick review of the document, those names stood out for their notoriety. Our coverage will continue minute-by-minute through the course of the proceedings and for the foreseeable future thereafter, but the entire report is available for viewing here at MLB.com. View the complete Mitchell Report.
While the report detailed drug use in baseball by naming those accused, the report also contained 19 separate recommendations for the sport to move forward from this point, proceeding after a culture of steroids and performance enhancement grew exponentially in the late 1990s.
Mitchell's report named both Major League Baseball and the MLB Players Association in assigning blame, charging leadership -- from the Commissioner to club owners and general managers -- for allowing the issue to proliferate.