Question

suppose that the order is 400 mg IV q8h starting immediately. if the drug has a half life of 8 hours, what is the approximate number of milligrams present in the patient’s system at the end of 24 hours?

Answer 1

50mg is what's left.

N0 = 400mg

Time (t) = 24hrs

halflife t1/2 = 8

What's left = N1