According to this analysis of data from 1995 to 2005, nearly 600,000 physician visits yearly are attributable to adverse drug events (ADEs) in children. As documented in earlier research, immunosuppressive and chemotherapy medications were associated with the highest risk of an ADE. Prior studies have found that many ADEs in children are attributable to incorrect medication administration by parents, and parental education has been investigated as a means of preventing such errors. A case of parental error in administering medication to an infant is discussed in this AHRQ WebM&M commentary.