Former FDA Commissioner Margaret Hamburg And Hedge Fund Husband Named In Lawsuit Over Levaquin. A lawsuit naming former FDA Commissioner Margaret Hamburg as a defendant has been filed in the US District Court for the District of Columbia, alleging that she pushed through approval of antibiotic Levaquin. The suit also names her husband, Peter Brown, who at the time of Hamburg’s tenure ran a hedge fund that was heavily invested in Johnson & Johnson, the manufacturer of Levaquin.… Read the rest