Tylenol (acetaminophen) dose: The tylenol (acetaminophen) dose is 10-15 mg per Kg of body weight, your son's weight Is about 43 Kg so 500 mg of tylenol (acetaminophen) is in the range. You can give him liquid tylenol (acetaminophen) 160 mg per 5 ml, he gets 2.75 tsp every 4- 6 hours for fever or pain as needed. I hope that answers your question. Best wishes.
Answered 7/21/2015
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