Liver dysfunction primarily affects which pharmacokinetic step?

Absorption refers to the process by which a drug enters the bloodstream after administration. While liver dysfunction may indirectly affect absorption through changes in blood flow or gastrointestinal function, it is not the primary pharmacokinetic step impacted. The absorption process occurs primarily in the intestines and is less directly linked to liver health.

Distribution involves the dispersion of a drug throughout the body's fluids and tissues after it has entered the bloodstream. Factors such as blood flow and tissue binding influence this process. Although liver dysfunction can influence protein binding and blood flow, it does not primarily alter distribution compared to its significant impact on metabolism.

Excretion is the elimination of drugs from the body, primarily through the kidneys. While liver dysfunction can affect the overall clearance of drugs, it predominantly impacts how drugs are metabolized before they are excreted. Thus, excretion is not the main pharmacokinetic step affected by liver dysfunction.