The makers of these medicines are making changes to single-ingredient liquid infants’ and children’s acetaminophen to make it easier for parents and caregivers to use these medicines and to reduce potential medication errors. (These changes don’t apply to solid, single-ingredient acetaminophen or multi-symptom treatments that contain acetaminophen).

While the transition started in 2011 and is still taking place, medicines containing the old concentration could still be on the shelves or in your home medicine cabinet, making it especially important to carefully read labels.

All pediatric liquid acetaminophen – infant’s and children’s – will be one strength.

  • To recognize the new (unconcentrated) version of infant acetaminophen, look for the syringe (not a dropper) dosing device and for this concentration on the bottle: 160 mg/5 mL.
  • To recognize the old (concentrated) version of infant acetaminophen, look for a dropper top and for this concentration on the bottle: 80 mg/0.8 mL.
  • The concentration of children’s acetaminophen (age 2 and up) will not change, but the packaging and measuring cup have been streamlined for easy, convenient use.

All dosing devices for all products will have uniform measurement markings, with the preferred unit of measurement being milliliters (mL).

Reminder: Use only the dosing device provided with the purchased product in order to correctly measure the right amount of liquid acetaminophen.

Pediatric Dosing Chart

Download a PDF version of the chart

Additional Resources:

Source: "How to Recognize and Use Old and New Infant Acetaminophen.” BabyCenter.

OTC Safety



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