The FDA is warning parents to look at the labels carefully when buying liquid acetaminophen for infants. There's a new, more diluted version of the medicine now available for infants.

The older, more concentrated versions of liquid acetaminophen for infants come in a concentration of 80 mg per 0.8 mL or 80 mg per 1 mL.
The new version for infants has the same concentration as liquid acetaminophen for children: 160 mg per 5 mL.

The higher concentration is still available in some stores. The FDA warns that buyers need to read the label carefully to know which formula they are buying so they administer the right dose to their children.