Complex sentence: In December 2007, Eminem was hospitalized after a methadone overdose he had first bought from a dealer who had told him it was "just like Vicodin, and easier on (your) liver".
Split into simpler sentences: In December 2007, Eminem was hospitalized after a methadone overdose. He had first bought methadone from a dealer who had told him it was "just like Vicodin, and easier on (your) liver".