Meet the Tylenol twins.

The article presents information on the changes made in the packaging for hospital unit-dose Tylenol, acetaminophen, 500 mg caplets. The new label of the fever reducer includes a bar code, which is an important safety improvement. The package similarities between the two Tylenol concentrations is likely to lead to mix-ups and possible dosing errors in facilities that do not use point-of-care bar coding. The change reinforces the point that one should not rely on package color to identify a medication.