Irwin is a consultant to IPEC and the excipient industry specializing in quality assurance and regulatory compliance for pharmaceutical excipient ingredients. He also has experience in areas of quality assurance for API, medical device and drug products.
For 17 years he was Corporate Director of Quality Assurance for International Specialty Products (ISP) with responsibility for their excipient, API, and medical device products. He has worked since 1991 with the International Pharmaceutical Excipients Council (IPEC) developing guidelines for excipient GMP compliance and has represented IPEC at various conferences and at the Food & Drug Administration. Dr. Silverstein established an excipient GMP certification program that was accredited by the American National Standards Institute (ANSI) and ran the program from 2001 till 2014.
His recent consulting has broadened to include pharmaceutical firms where he assesses conformance to site requirements. He has audited excipient manufacturers to perform a gap analysis with respect to excipient GMP compliance and has provided detailed guidance as to how to improve their conformance to excipient GMP requirements. As an experienced GMP auditor, with American Society for Quality (ASQ) Certified Quality Auditor (CQA) status as well as ISO 9000 Certified Lead Auditor training, he has developed the IPEC-Americas auditor training programs for hourly and supervisory personnel. Irwin is also serving as leader of the IPEC-Americas Excipient Learning Lab (ELL).