SIDI Group Releases Certificate of Analysis Guideline

The Joint Standardized Information on Dietary Supplement Ingredients (SIDI) Working Group—a coalition of the dietary supplement industry’s trade associations—today announced the release of the new Certificate of Analysis (CoA) Guideline, the latest in a series of voluntary guidelines for the supplement industry developed to assist finished product manufacturers with the complex process of qualifying their ingredient suppliers.

The voluntary CoA Guideline outlines the type and scope of information that should appear on a CoA provided by an ingredient supplier to its finished product manufacturer for a component or ingredient used in a dietary supplement.

“A requirement of the supplier qualification process involves verifying the information provided in an ingredient CoA, and manufacturers of dietary supplements rely on supplier CoAs to ensure finished products are GMP-compliant. It’s essential for ingredient suppliers to have a form that can be consistently used, containing the appropriate information in a clear and concise format,” said Andrew Shao, Ph.D., a spokesperson for the SIDI Working Group and CRN’s senior vice president, scientific & regulatory affairs. “By standardizing the information on CoAs, this voluntary guideline will benefit both ingredient suppliers and dietary supplement manufacturers.”

The voluntary CoA guideline, along with sample CoA templates for botanical and non-botanical ingredients, is available on the five trade associations’ websites, along with the original SIDI protocol materials.

The SIDI Working Group is a cooperative effort run by the dietary supplement industry trade associations including the American Herbal Products Association (AHPA), the Consumer Healthcare Products Association (CHPA), the Council for Responsible Nutrition (CRN), the Natural Products Association (NPA), and the United Natural Products Alliance (UNPA).

The American Herbal Products Association (AHPA) is the national trade association and voice of the herbal products industry. AHPA is comprised of domestic and foreign companies doing business as growers, processors, manufacturers and marketers of herbs and herbal products, including foods, dietary supplements, cosmetics, and nonprescription drugs. Founded in 1982, AHPA’s mission is to promote the responsible commerce of herbal products. Website:

Consumer Healthcare Products Association (CHPA) is the 129-year-old, not-for-profit association representing the makers of over-the-counter medicines and nutritional supplements, and the consumers who rely on these healthcare products. For more information, visit

Council for Responsible Nutrition (CRN), founded in 1973, is a Washington, D.C.-based trade association representing dietary supplement manufacturers and ingredient suppliers. In addition to complying with a host of federal and state regulations governing dietary supplements in the areas of manufacturing, marketing, quality control and safety, our 70+ manufacturer and supplier members also agree to adhere to additional voluntary guidelines as well as CRN’s Code of Ethics. Visit

The Natural Products Association, founded in 1936, represents more than 10,000 retailers, manufacturers, wholesalers and distributors of natural products, including foods, dietary supplements, and health/beauty aids. Association members meet annually each summer in Las Vegas at the association’s official tradeshow, Natural MarketPlace (

The United Natural Products Alliance (UNPA), founded in 1991, is an association of dietary supplement and functional food companies that share a commitment to provide consumers with natural health products of superior quality, benefit and reliability. Information on the Association may be found at

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