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

itoggle caption Toby Talbot/AP

Acetaminophen has been added to the list of over-the-counter painkillers that can cause rare but deadly skin reactions. Paul Sancya/AP hide caption

itoggle caption Paul Sancya/AP

Johnson & Johnson is lowering the recommended top dose of Extra Strength Tylenol to reduce the risk of accidental overdose from acetaminophen. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP