How Many Tablets Should A 34 Kg Patient Take Every Four Hours

A doctor administers a drug to a 34 kg patient, using a dosage formula of 50 mg/kg/day. Assume that the drug is available in a 300 mg per 5 mL suspension or in 400 mg tablets.

Solution

50 mg/kg/day x 34 kg = 1700 mg/day 1700 mg/day x 1 day/24 hrs x 4 hrs = 283 mg every 4 hrs   283 mg/4hrs x 1 tablet/400 mg = 0.7 tablets   So to acieve the desired dose, the pati should take seven tenths of a tablet every 4 hours. Thats an unusual dosage since it’s difficult to take 0.7 tablet. The question didnt ask about the liquid suspension so I didn’t include that.