Biopharmaceutics Classification Biowaivers Guidance

FDA has published an International Council for Harmonization guidance, M9 Biopharmaceutics Classification System-Based Biowaivers, describing the biopharmaceutics classification system (BCS)-based biowaivers approach intended to reduce the need for in vivo bioequivalence studies. The document says in vivo bioequivalence studies may be exempted if an assumption of equivalence in in vivo performance can be justified by satisfactory in vitro data.

The guidance says the BCS is a scientific approach based on the aqueous solubility and intestinal permeability characteristics of the drug substance or substances.

Read more