Despite more than a decade's worth of research showing that taking too much of a popular pain reliever can ruin the liver, the number of severe, unintentional poisonings from the drug is on the rise, a new study reports. The drug, acetaminophen, is best known under the brand name Tylenol. But many consumers don't realize that it is also found in widely varying doses in several hundred common cold remedies and combination pain relievers.
