Basic Pharmacokinetics and Pharmacodynamics: An Introduction
Receptors and Targets: Most drugs work by binding to specific receptors—proteins on or within cells. This interaction is often compared to a lock and key. When a drug binds, it can either activate the receptor (agonist) or block it (antagonist). Basic Pharmacokinetics and Pharmacodynamics: An...
Distribution: Once in the blood, the drug is carried to various tissues and organs. Distribution depends on blood flow, the drug’s ability to cross cell membranes (like the blood-brain barrier), and its tendency to bind to plasma proteins. Distribution: Once in the blood, the drug is
Dose-Response Relationship: PD examines the relationship between the concentration of the drug at the target site and the intensity of the resulting effect. This help determines the therapeutic window—the range between a dose that is effective and a dose that becomes toxic. Distribution: Once in the blood
Pharmacokinetics describes the movement of a drug into, through, and out of the body. This process is typically divided into four stages, often referred to by the acronym ADME: