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©2013 UpToDate ® Print Email Common dosage forms of acetaminophen (paracetamol) Preparation Strength Examples of US trade names Extended release caplet 650 mg Tylenol Arthritis Pain Extra strength tablets, capsules, caplets, gelcaps, geltabs 500 mg Genapap Extra Strength, Genebs Extra Strength, Tylenol Extra Strength, Medpap Extra Strength, Aspirin Free Anacin® Maximum Strength, Cetafen Extra, Redutemp, Valorin Extra Tablets 325 mg Cetafen, Genapap, Genebs ,Tylenol, Valorin, Mapap 160 mg Mapap Chewable tablets 80 mg Children's Genapap, Children's Mapap, Children's Tylenol 160 mg Junior Strength Tylenol Liquid, syrup, elixir, suspension 160 mg/5 mL (32 mg/mL) Redutemp, Children's Genapap, Children's Silapap, Children's Mapap Children's Tylenol 500 mg/15 mL (33.3 mg/mL) Tylenol Sore Throat Drops* 100 mg/mL (80 mg/0.8 mL) Infant Genapap, Infantaire, Infant's Silapap Liquiprin for Children, Infant's Mapap, Infant's Tylenol Suppositories 80, 120, 325, 650 mg Acephen, Feverall, Mapap Intravenous solution• 10 mg/mL Ofirmev *As of 2011, in an effort to minimize pediatric dosing errors, the Consumer Healthcare Products Association, in conjunction with the US Federal Drug Administration, is phasing out formulations that contain 100 mg per ml (infant acetaminophen drops) so that pediatric liquid preparations obtained in the United States after that time will all contain a concentration of 32 mg/ml (160 mg per 5 mL). However, 100 mg per mL solutions are likely to continue to be given to children from infant acetaminophen drops preparations purchased by caregivers before this phase out. •NOTE: Tenfold dosing errors and toxicity from intravenous acetaminophen have occurred in small children when the calculated dose in mg is INCORRECTLY administered as the volume in mL because the concentration of the solution is 10 mg/mL. In the United States, intravenous acetaminophen is not licensed for use in children under two years of age.