Pharmaceutical Formulas

Question

Melissa is 4 years old and weighs 50 pounds. She is prescribed an antibiotic to treat a throat infection. The regular adult dosage is 200 mg per day. What is the dosage that Melissa should receive?

Multiple Choice
33 mg
66 mg
99 mg
111 mg

Answer 1

ASSUMING THAT DOSAGE SHOULD BE PROPORTIONAL TO WEIGHTS...

 

x/50 lbs = 200 mg/weightoftypicaladult  but you should see that the denominator on the right side is itself subject to variation, and therefore this is a risky calculation.  Therefore POOR PROBLEM.