CHICAGO - JUNE 30:  Excedrin PM is sold over-the-counter at a drugstore June 30, 2009 in Chicago, Illinois. The medication contains acetaminophen; which today a Food and Drug Administration's advisory panel recommended that the agency reduce the maximum recommended dosage because of concerns over the potential of liver damage. Getty Images logo Getty Images 32 months ago

CHICAGO - JUNE 30: Excedrin PM is sold over-the-counter at a drugstore June 30, 2009 in Chicago, Illinois. The medication contains acetaminophen; which today a Food and Drug Administration's advisory panel recommended that the agency reduce the maximum recommended dosage because of concerns over the potential of liver damage.