Dr. Yi-Ling Hsieh is a Senior Scientist in Early Development in Allergan. She has extensive experience in drug product formulation development and physical chemical characterization. She currently leads the lipid-based formulation platform development in Allergan and investigates the biopharmaceutical impact of formulation design. Prior to her current position, she led the solid state characterization efforts of small and large molecule inhalation formulation in Novartis (San Carlos) to support the activities from pre-clinical stage to NDA submission. She also gained wide-ranging industry experience, including material characterization, novel enabling formulations, and regulatory quality compliance from her prior experience in Pfizer, Schering-Plough and Bristol-Myers Squibb. She authored several peer-reviewed publications with the focus of salt stability and the precipitation and supersaturation behavior of drug substances. Dr. Hsieh received her Ph.D. in Pharmaceutics and B.S. in Pharmaceutical Sciences from Purdue University – West Lafayette.