Dosaage calculations

Question

You receive you receive a new order for Amoxicillin for 75 mg q12 hours via G-tube when you look up the medication you find a safe dosage for Amoxicillin is 25 to 45 mg per kg per day your patient weighs 47.6 lb what is the safe dosage range

Answer 1

47.6 lb x 2.2 lb/kg = 21.6 kg

25 mg/kg/day x 21.6 kg = 540 mg/day

45 mg/kg/day x 21.6 kg = 972 mg/day

These are the safe dosage range

Since the order is for 75 mg q 12 hrs, this amounts to 2 doses per day = 2 x 75 mg = 150 mg. Certainly within the safe dosage range.