"brand name drug" is within the limits of 80% to 125%. Where AUC refers to the concentration of the drug in the blood over time t = 0 to t = ?, C_max refers to the maximum concentration of the drug in the blood. When T_max is given, it refers to the time it takes for a drug to reach C_max.

While the mechanisms by which a formulation affects bioavailability and bioequivalence have been extensively studied in drugs, formulation factors that influence bioavailability and bioequivalence in nutritional supplements