Acetaminophen, which is sold under the brand name Tylenol, may carry underappreciated risks. But teasing out their magnitude is a challenge. Scott Olson/Getty Images hide caption
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The prescription painkiller sold under the brand-name Vicodin contains hydrocodone bitartrate and acetaminophen. To reduce the risk of liver damage, the Food and Drug Administration is moving to limit the amount of acetaminophen allowed in prescription medicines. Toby Talbot/AP hide caption
Dr. John McBride examines 9-month-old Martez after his mother, Ceasha Moorer, brought him in to check on his asthma. Courtesy of Karen Schaefer hide caption
More than a half-million bottles of Tylenol for babies have been recalled because of complaints about a new system for getting the dose right. The doughnut-like receptacle for the syringe seen in the neck of the bottle can get pushed down into the liquid medicine. Johnson & Johnson hide caption