Bioavailability in the context of drugs refers to the amount of a drug that reaches its intended target site in the body after it has been administered. Bioavailability is expressed as a percentage and is a measure of how much of the administered drug is available to the body for its intended effects. This concept is important because it affects the potency and efficacy of the drug. It can be influenced by various factors, such as the route of administration, the dose, and the individual’s metabolism.
Bioavailability can vary significantly between different drugs and between different individuals, making it a critical factor in determining the appropriate dose and regimen for each patient. Understanding bioavailability is important for developing and using drugs, as well as determining their safety and effectiveness.