After reaching a maximum, the concentration of a drug in the body will begin to decrease. This is known as the ______________ of the drug.
A) concentration curve
B) efficacy
C) half life
D) withdrawal effect

Question

Quizplus · Accepted Answer

The half life of a drug refers to the time it takes for the concentration of the drug in the body to decrease by half. After reaching a maximum concentration, the drug will eventually begin to decrease and this decrease is determined by its half life. Choice A, the concentration curve, simply describes the shape of the graph showing the concentration of the drug over time. Choice B, efficacy, refers to the ability of a drug to produce a desired effect, but it is not directly related to the decrease in concentration over time. Choice D, withdrawal effect, describes the symptoms or effects that occur when a drug is discontinued, but it is not related to the decrease in concentration over time.

After Reaching a Maximum, the Concentration of a Drug in the Body