A patient is administered 200 mg of a drug. 75 mg of the drug is eliminated from the body in 90 minutes. If the drug follows first order kinetics, how much drug will remain after 6 hours?
(A) 12.5 mg (B) 25 mg (C) 30 mg (D) 50 mg
(C) Answer- C. 30 mgDrug remains in the body at the end of 4th 90 minutes (6 hours) : 48.7 -18.3 = 30.4 (Approx. 30 mg)