Bioavailability & Bioequivalence

Bioavailability is used in pharmacology and nutritional sciences and environmental sciences. In pharmacology, it refers to the rate at which an administered drug is absorbed by the body's circulatory system, the systemic circulation. A comparative bioavailability study refers to the comparison of bioavailabilities of different formulations of the same drug or different drug products.

Bioequivalence is a comparison of the bioavailability of two or more product i.e. Formulation containing the same active ingredient is said to be bioequivalent if their rate and extent of absorption is the same.