Which step is defined as the body's removal of the drug from the body?

Which step is defined as the body's removal of the drug from the body?

• A. Liberation
• B. Absorption
• C. Distribution
• D. Excretion

Answer: (D)

Excretion is the process by which the body removes the drug from the body. It encompasses elimination of the drug and its metabolites through routes such as the kidneys (urine), liver (bile into feces), lungs (exhaled air), and even skin (sweat). This step lowers the drug’s concentration in the blood and tissues, effectively terminating its action. Liberation refers to the release of the drug from its dosage form, absorption is entry into the bloodstream, and distribution is the spread of the drug to body tissues. Thus, the body's removal of the drug from the body is excretion.

Excretion is the process by which the body removes the drug from the body. It encompasses elimination of the drug and its metabolites through routes such as the kidneys (urine), liver (bile into feces), lungs (exhaled air), and even skin (sweat). This step lowers the drug’s concentration in the blood and tissues, effectively terminating its action. Liberation refers to the release of the drug from its dosage form, absorption is entry into the bloodstream, and distribution is the spread of the drug to body tissues. Thus, the body's removal of the drug from the body is excretion.