Pharmacokinetics

/ˌfɑrməkoʊkɪˈnɛtɪks/ noun

Definition

The branch of pharmacology concerned with the movement of drugs within the body, including absorption, distribution, metabolism, and excretion processes.

Etymology

From Greek 'pharmakon' (drug) and 'kinetikos' (relating to motion), coined in the mid-20th century as drug research became more sophisticated. The term reflects the scientific shift toward understanding drugs as dynamic systems rather than static treatments.

Kelly Says

Pharmacokinetics revolutionized medicine by revealing that 'the dose makes the poison' is oversimplified—timing, route, and individual metabolism are equally crucial. This field explains why the same drug can be life-saving for one person and ineffective for another, making personalized medicine possible.

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