Colin Farrell is taking a break. The Hollywood hunk, known for his work-hard-play-harder attitude, is being treated for a dependency to prescription medication, publicist Danica Smith said Monday. According to a statement from Smith, Farrell got hooked on pain pills after suffering a back injury. He voluntarily checked himself into the treatment facility, which has not been identified. Smith says the actor is also coping with "exhaustion." "No other comments [are] to be made this time," Smith said.