Evaluation of oral modified release drug tablet to support the approval of additional strengths

The FDA guidance, Bioequivalence Studies with Pharmacokinetic Endpoints for Drugs Submitted Under an ANDA (Aug 2021), provides recommendations for demonstrating the bioequivalence of additional strengths of a proposed modified release drug product. The recommendations involve evidence to demonstrate the same drug release mechanism and similar dissolution profiles across strengths, as well as ratios of drug excipients across strengths that are appropriate for the drug release mechanism. The purpose of this project is to determine the critical quality attributes for different release controlling platform technologies and to determine the appropriate factors to scale the formulation for additional strengths. The outcomes of this research are intended to support generic drug development and regulatory decision making.