Rep. Joe Wilson (R-S.C.), who shouted "you lie!" at President Obama during his Wednesday night address to Congress, admitted to regularly consuming caffeine pills in 2007.

It is unclear if Wilson still takes NoDoz, a brand of pill that contains 200 milligrams of caffeine a pop. By comparison, a seven ounce cup of drip coffee contains 115 to 175 milligrams of caffeine.

A source told The Hill in 2007 that the congressman ingested the tablets “like candy," but Wilson insisted he was not addicted despite the fact that he had been taking them since high school.

"I love coffee, but I don’t have time to drink it and I don’t have access to it," Wilson said at the time.

The fifth-term Republican said he shared his NoDoz use with his doctor, who Wilson said assured him that the over-the-counter pills are not dangerous unless you get addicted.

Wilson interrupted the president yesterday night after he said that his health reform plan will not insure illegal immigrants. He quickly apologized for his outburst last night but maintained that Obama was lying in a radio interview today.