Saturday, April 5, 2014

Pharmacokinetics

What is Pharmacokinetics?

Pharmacokinetics may be simply defined as what body does on drug. Pharmacokinetics includes the study of the mechanisms of absorption and distribution of an administered drug. Pharmacokinetics is divided into several areas including the extent and rate of absorption, distribution, metabolism and excretion. This is commonly referred to as the ADME scheme:

1. Absorption - the process of a substance entering the blood circulation.
2. Distribution - the dispersion or dissemination of substances throughout the fluids and tissues of the body.
3. Metabolism (or Biotransformation) - the irreversible transformation of parent compounds into daughter metabolites.
4. Excretion - the removal of the substances from the body. In rare cases, some drugs irreversibly accumulate in body tissue.

Basic Mechanism of Pharmacokinetics