Time-Dependent Pharmacokinetics

Time-dependent pharmacokinetics describes clearance or bioavailability changes with repeated dosing. Enzyme induction from repeat dosing increases metabolism reducing bioavailability. Enzyme inhibition from metabolite accumulation decreases metabolism increasing bioavailability. Saturation effects change kinetics at higher concentrations. Reversibility assessment determines permanence of changes.

Population pharmacokinetics identify time-dependent parameters. Regulatory submissions address time-dependent kinetics. Clinical monitoring detects bioavailability changes. Dose adjustments account for time-dependency. Post-approval monitoring confirms predictions.