Clinical Toxicology and Pharmacology

Pharmacokinetic and pharmacodynamics

The study of drug  absorption, distribution, metabolism, and excretion is known as pharmacokinetics. Drug clearance, or the removal of drugs from the body, is a key topic in pharmacokinetics, similar to creatinine clearance. Pharmacodynamics researches the molecular, biochemical, and physiologic effects and reactions of a medication. At the molecular level, all medicines work by interacting with biological structures or targets to cause a change in the way the target molecule operates in terms of intermolecular interactions.