Is It Bad to Take Expired Tylenol?

The Family Health Guide describes an FDA study done in cooperation with the military. More than 100 prescription and over-the-counter medications were researched, and 90 percent of them were acceptable for use 15 years after their expiration dates. Drugs that do seem to expire include nitroglycerin, insulin, liquid antibiotics and, perhaps, tetracycline. To help medicines stay effective, they should be kept in cool, dry locations.