pharmacokinetics
The branch of pharmacology dedicated to determining the fate of substances administered to a living organism, summarized as Absorption, Distribution, Metabolism, and Excretion (ADME).
Pharmacokinetics is often summarized as 'what the body does to the drug', contrasting with pharmacodynamics, which is 'what the drug does to the body'.
Word relationships
- drug clearance dynamics: Focuses primarily on elimination rates, whereas pharmacokinetics covers absorption, distribution, metabolism, and excretion together.
Commonly confused with
- pharmacodynamics: Pharmacokinetics studies how the body processes the drug (ADME), while pharmacodynamics studies how the drug affects body tissues and receptors.
Word family
- pharmacokinetic (adjective): Relating to the biological processing and movement of drugs in the body.
Collocations
- pharmacokinetic profile
- pharmacokinetic properties
- altered pharmacokinetics
- pharmacokinetic modeling
Example sentences
- "The lead candidate was abandoned during early trials because its pharmacokinetic profile showed an undesirably rapid clearance rate." Drug Discovery
- "Understanding age-related changes in pharmacokinetics is essential for safe prescribing in geriatric medicine." Clinical Pharmacology
Memory hook
PHARMA (drug) + KINETICS (movement, like kinetic energy) = How drugs MOVE through the body. Pharmacokinetics = Drug kinetics: Absorption, Distribution, Metabolism, Excretion.
When not to use
Do not use 'pharmacokinetics' to describe the physical symptoms a drug causes in a patient.
Fun facts
- Pharmacokineticists use complex mathematical calculus models to map drug concentrations in plasma over time.
Related words
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