The licensed physician orders amoxicillin 500 mg po q hours for a child weighing 44 lbs. The recommended daily oral dosage is 25-50 mg/kg/24 h in divided doses q hours.

Step 1 is: Convert the child's weight from pounds to kilograms. The conversion factor is 1 kg ≈ 2.2 lbs. 44 lbs÷ 2.2 lbs/kg = 20 kg. Step 2 is: Calculate the minimum safe daily dosage using the recommended range (25 mg/kg/24 h). 25 mg/kg/24 h× 20 kg = 500 mg/24 h. Step 3 is: Calculate the maximum safe daily dosage using the recommended range (50 mg/kg/24 h). 50 mg/kg/24 h× 20 kg = 1000 mg/24 h. Step 4 is: State the minimum and maximum safe daily dosage range. The safe daily dosage range is 500 𝐦𝐠/24 𝐡 to 1000 𝐦𝐠/24 𝐡.