In pharmacology, bioavailability is a subcategory of absorption and is the fraction (%) of an administered drug that reaches the systemic circulation. [1]

The meaning of BIOAVAILABILITY is the degree and rate at which a substance (such as a drug) is absorbed into a living system or is made available at the site of physiological activity.

Bioavailability refers to the extent and rate at which the active moiety (drug or metabolite) enters the systemic circulation, thereby accessing the site of action.

Jul 30, 2023 · Bioavailability refers to the extent a substance or drug becomes completely available to its intended biological destination (s).

Bioavailability is the term most often used to characterize drug absorption. This term has been defined as the relative amount of a drug administered in a pharmaceutical product that enters …

Dec 22, 2025 · BIOAVAILABILITY definition: 1. the degree to which a food substance, drug, etc. in a particular form is able to be absorbed and…. Learn more.

BIOAVAILABILITY definition: the extent to which a nutrient or medication can be used by the body. See examples of bioavailability used in a sentence.

Bioavailability refers to the proportion of a drug that enters the systemic circulation when introduced into the body and is available for therapeutic effect.

bioavailability The rate and extent to which a drug is available to serve as a substrate, bind to a specific molecule or participate in biochemical reactions in a target tissue after administration. …

Bioavailability is referred to as the extent and rate to which the active drug ingredient or active moiety from the drug product is absorbed and becomes available at the site of drug action.