Question

which of the following actions of pharmacokinetics is most impacted by age? absorption distribution metabolism excretion

Explanation:

Age significantly affects metabolism. As people age, liver function (a major site of drug metabolism) declines. Enzyme activity in the liver, which is crucial for metabolizing drugs, reduces with age. This leads to slower drug metabolism, potentially causing drugs to accumulate in the body. In contrast, while age can have some impact on absorption (e.g., changes in gastrointestinal motility), distribution (e.g., changes in body composition like fat - to - lean ratio), and excretion (e.g., reduced renal function), the effect on metabolism is often more profound in terms of the overall pharmacokinetic profile and the risk of adverse drug reactions due to altered drug levels.

Answer:

Metabolism