Definition

Noun: The branch of pharmacology concerned with the movement of drugs within the body over time. This includes the study of the processes of absorption, distribution, metabolism, and excretion (often abbreviated as ADME) of pharmaceutical compounds.

Usage

"Pharmacokinetics" is a scientific term used primarily in medicine, pharmacology, and drug development. It describes the quantitative analysis of how the body affects a specific drug after administration.

Examples

• The pharmacokinetics of the new antibiotic showed rapid absorption but a short duration of action.
• Understanding a drug's pharmacokinetics is essential for determining the correct dosage and dosing schedule.
• The study compared the pharmacokinetics of the oral and intravenous formulations.

Advanced Usage

• Population pharmacokinetics: A branch that studies the sources and correlates of variability in drug concentrations among individuals who are the target patient population.
• Pharmacokinetic modeling: The use of mathematical models to predict and describe the concentration-time profile of a drug in the body.
• Pharmacokinetic parameters: Specific measurable values such as bioavailability, half-life, clearance, and volume of distribution.

Variants and Related Words

• Pharmacokinetic (adjective): Relating to pharmacokinetics.
  • The researchers analyzed the pharmacokinetic data from the clinical trial.
• Pharmacodynamics (noun): The branch of pharmacology concerned with the biochemical and physiological effects of drugs and their mechanisms of action. Often paired with "pharmacokinetics" (PK/PD).

Synonyms

• Drug metabolism studies
• ADME studies (Absorption, Distribution, Metabolism, Excretion)

Notes

While "pharmacokinetics" is sometimes informally explained as "what the body does to the drug," its counterpart, pharmacodynamics, is described as "what the drug does to the body." Together, they form the core principles of clinical pharmacology.

Noun

1. the study of the action of drugs in the body: method and rate of excretion; duration of effect; etc.