by metabolic enzymes such as CYP or UGT enzymes) and the effects and routes of excretion of the metabolites of the drug. Pharmacokinetics includes the study of the mechanisms of absorption and distribution of an administered drug, the rate at which a drug action begins and the duration of the effect, the chemical changes of the substance in the body (e.g.
Pharmacokinetics is often studied in conjunction with pharmacodynamics. The substances of interest include pharmaceutical agents, hormones, nutrients, and toxins. Template:Quote box Pharmacokinetics, sometimes abbreviated as PK, (from Ancient Greek pharmakon "drug" and kinetikos "to do with motion" see chemical kinetics) is a branch of pharmacology dedicated to the determination of the fate of substances administered externally to a living organism.
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