FDA is warning that taking higher than recommended doses of the common over-the-counter (OTC) allergy medicine Benadryl (diphenhydramine) can lead to serious heart problems, seizures, coma, or even death.

The FDA is providing recommendations for certain high-risk populations may be more vulnerable to potential adverse health effects of mercury exposure from dental amalgam.

The FDA is requiring the Boxed Warning be updated by adding other information to the prescribing information for all benzodiazepine medicines. This information will describe the risks of abuse, misuse, addiction, physical dependence, and withdrawal reactions across all the medicines in the class.