A drug dose that delivers 800 mg has a half-life of 5 hours. after a half-life the body will have 400 mg.
What is the half-life of a drug?
Half-life (t 1/2): is the time required for the amount of a substance to be reduced by half. More specifically, when dealing with drugs we say that the half-life is the time taken for the plasma concentration of a drug in the body to be reduced by half.
With this information, we can conclude that a drug dose that delivers 800 mg has a half-life of 5 hours. after a half-life the body will have 400 mg.
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