Question

The rate of absorption of a drug taken orally increases with the dose until a point where further increases result in no further absorption rate improvement. Absorption does not involve ATP splitting. Which process best describes the drug absorption?

a) Facilitated Diffusion
b) Active Transport
c) Passive Diffusion
d) Saturation Kinetics

Answer 1

The drug absorption process in this case is described by saturation kinetics, where an increase in dose initially leads to an improved absorption rate until a point of saturation is reached. Further increases in dose do not result in any additional absorption.

Step-by-step explanation:

The best process that describes the drug absorption in this case is d) Saturation Kinetics.

When the rate of absorption of a drug taken orally increases with the dose until a point where further increases result in no further absorption rate improvement, it indicates that the drug absorption has reached saturation. Saturation kinetics refers to the point where all available transport proteins involved in drug absorption are fully occupied, and further increases in dose do not lead to any additional absorption.

This phenomenon can be observed when a drug is taken orally and absorbed in the gastrointestinal tract.