In a report on poisoning that focused on children, the Centers for Disease Control and Prevention said that prescription and over-the-counter medications account for almost 7 out of 10 emergency room visits for childhood poisonings. Each year more than 71,000 children ages 18 and younger visit hospital emergency rooms for unintentional medication overdoses. Most of the ingestions are among toddlers.

"Unsupervised medication ingestions caused over 80 percent of the emergency department visits. These emergency department visits for unsupervised ingestions are ten times more common than overdoses from medication errors by a parent or caregiver," said Daniel Budnitz, M.D., the senior study author.

The medications children most often consumed included acetaminophen (such as Tylenol), opioids (such as Percodan) or benzodiazepines (such as Valium and Xanax), cough and cold medicines, nonsteroidal anti-inflammatory drugs (such as aspirin and ibuprofen), and antidepressants.