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• About USP
• USP–NF
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  • USP Verified Dietary Supplements
  • USP Verified Dietary Supplement Ingredients
    • Participating companies
    • Verified supplement ingredients
    • Verification process
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    • Frequently asked questions
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Companies Participating in the USP Ingredient Verification Program

The manufacturers listed below have chosen to participate in USP's Ingredient Verification Program and submit selected ingredients for verification.

• Bioriginal
• Hetian Dichen Pharmaceutical & Bio-technol. Co., Ltd.
• Huaian MDC Chemistry Co. Ltd.
• Inter Farma S.A.
• Kaiyuan Hengtai Fine Chemicals Factory
• Meitek Technology (Qingdao) Co. Ltd.
• Ocean Nutrition Canada
• Parry Nutraceuticals
• PuraPharm International (H.K.) Ltd.
• Shenzhou Biology & Technology Co. Ltd.
• Sigma-Tau Health Science, Inc.
• Tangshan Sanxin Biochemical Products Co. Ltd.
• Yantai Dongcheng Biochemical Co., Ltd.
• Zhejiang Medicine Co., Ltd. Xinchang Pharmaceutical Factory (ZMC)