Baby weight is 26 pounds, tylenol (acetaminophen) 80 mg q6h prn ordered. how much tylenol (acetaminophen) should be given in one dose?

That means 80mg/dose: A normal baby can take 6.8 mg of tylenol (acetaminophen) (acetominophen) per pound of body weight, in one dose. That means 6.8 mg x 26 pounds = 176.8 mg (but round down to 160 mg for simplicity). Tylenol (acetaminophen) is typically used for just 1-3 days. The baby's doctor may have recommended a smaller dose for some reason, as he knows the baby's details.

160 mgm every 4 hour: The dose for 26 lbs baby is 160 mgm can be repeated every 4 hours if needed not to exceed 4 doses in 24 hours.