Michael McGuffin has been active in the herbal industry since 1975, having owned and managed both retail and manufacturing businesses in this field. He is the Managing Editor of Botanical Safety Handbook, 1st edition (1997) and of Herbs of Commerce, 2nd edition (2000). He serves on the boards of the American Herbal Pharmacopoeia and United Plant Savers; on the Advisory Board of the USC School of Pharmacy Regulatory Science Program; and as chair of the U.S. Technical Advisory Group for ISO/TC 249, the International Organization for Standardization's Technical Committee on Traditional Chinese Medicine (provisional title). Michael maintains active involvement with regulatory agencies, and served on FDA's Food Advisory Committee Working Group on Good Manufacturing Practices for Dietary Supplements (1998-99), FDA's Food Advisory Committee's Dietary Supplements Subcommittee (2003-05), and California's Office of Environmental Health Hazard Analysis Food Warning Workgroup (2008-2010).