DENVER, CO - SEPTEMBER 9: Cornerback Tracy Porter #22 of the Denver Broncos celebrates as he runs off the field after defeating the Pittsburgh Steelers 31-19 at Sports Authority Field Field at Mile High on September 9, 2012 in Denver, Colorado. (Photo by Justin Edmonds/Getty Images)
Porter wasn't on the field Friday, a day after being cleared to practice. Coach John Fox said team doctors were still "regulating the medication. Not that it was a setback, but there was a little bit of an issue."
Porter also wasn't allowed to fly to Denver's game at San Diego on Oct. 15 after he experienced light-headedness and a racing heart - similar to the symptoms he felt before his seizure in August. He missed last week's game against New Orleans.
Porter has been replaced by Chris Harris in the starting lineup with Tony Carter moving up to nickel back.
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