In the old days (a couple of weeks ago), Tylenol and other acetaminophen products came in two concentrations--one for infants and another for children. The idea was to have a more concentrated (or stronger) suspension for infants so that parents didn't need to squirt quite so much liquid into their resistant babes. However, this discrepancy led to dosing confusion and so makers of acetaminophen are standardizing all of their liquids. This means that the children's strength will be the only one available on store shelves. Please read labels carefully and, when in doubt, call your doctor for dosing help.