Tylenol 3 has 16 mg of Codeine per 11 ml of liquid. A safe dose of Codeine is 4.8 mg/Kg/Day.

A patient who weighs 215 pounds needs a Tylenol 3 prescription. There are 2.2 pounds for every 1 kilogram. How many kilograms is this person's mass?
How many milligrams of Codeine can this patient have per day?
How many milliliters should the patient be prescribed every 6 hours of Tylenol 3.

1 answer

215lb * 1kg/2.2lb = 97.727kg
97.727kg * (4.8mg/day)/kg = 445.091 mg/day
445.091 mg/day * 11ml/16mg = 306ml/24hr = 76.5 ml/(6hr)