After how many hours is there less than 1 milligram left in the body? round your answer to the nearest integer.

: The amount of the concentration of the drug left on the body is determined by the half life of the drug.

Half life is defined as the time required by the drug to lose 50% of its pharmacological, physiological and radioactive charachteristics.

Explanation:

Half life is calculated bye the formula

Half life T1/2= 0.693× Vd/ cl

Where Vd is the volume of distribution and cl is the clearance.

The formula for the amount left in upur body is A=P(1/2) t/T

Where A is quntity at any time, P is initial value of A, t is the time elapsed, T is the half life.

answer:

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