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Mushroom Supplement Manufacturers

81 mushroom supplement manufacturers have a GMP-certified or licensed facility (NSF/ANSI 455-2 or Health Canada) or an Informed Manufacturer certified facility, 73 of them in the United States (top states: California 17, Utah 13, Florida 8); for 74 of them a USDA Organic certificate lists mushroom items, and 9 say on their own website that they make mushroom products. USDA Organic item lists checked October 1, 2026; website claims checked October 16, 2026; certification data checked November 1, 2026.

Best mushroom supplement manufacturers in the USA, ranked by public records →

Looking for a mushroom supplement manufacturer in the USA? Compare the listings below for private label mushroom supplements. Use the country and state links to narrow your shortlist.

Every company on this page has at least one manufacturing or packaging facility on a public registry we check (NSF/ANSI 455-2, Health Canada or Informed Manufacturer), and either its USDA Organic certificate lists mushroom items or its own website says it makes mushroom products; each listing says which. The certification and the USDA Organic item list come from public registries and were found there on the date shown. The item list covers organic products only, and it is the certifier’s record of what the operation handles, not a test of any product. A mushrooms claim on a company’s website is the company’s own: we record it with a quote and the date we checked, and we have not verified it.

Mushroom supplements can be made from the fruiting body, the mycelium or both, as whole powders or extracts. Ask each manufacturer which it uses, how it confirms the species and what it tests for.

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First 50 of 81

Order: featured, listings with a website, then A–Z.

  1. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Ada, MI, United Statesamway.com

    • Capsules
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Kitting
    • Coating
    • Tablet compression
    • Encapsulation
    • +1 more
    NSF/ANSI 455-2checked Nov 1, 2026
  2. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Vallejo, CA, United Statesallpointsmfg.com

    Informed Manufacturer(not a GMP audit)checked Oct 6, 2026
  3. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Tempe, AZ, United Statesacbmfg.com

    • Capsules
    • Powders
    • Softgels
    Operations:
    • Kitting
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  4. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Davie, FL, United Statesarnetusa.com

    • Capsules
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Coating
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  5. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Hauppauge, NY, United Statesbactolac.com

    • Capsules
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Coating
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  6. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Hayward, WI, United Statesbeehivebotanicals.com

    • Capsules
    • Liquids
    • Powders
    Operations:
    • Liquid formulation
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  7. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Livermore, CA, United Statesproteinresearch.com

    • Capsules
    • Powders
    • Tablets
    Operations:
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  8. Says it makes mushroom productscompany website

    Hauppauge, NY, United Statesbio-botanica.com

    • Capsules
    • Liquids
    • Oils
    • Powders
    • Tablets
    Operations:
    • Pasteurization
    • Baking
    • Coating
    • Liquid formulation
    • +3 more
    NSF/ANSI 455-2checked Nov 1, 2026
  9. BL Bio Lab LLC

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Clearwater, FL, United Statesblbiolab.com

    • Capsules
    • Liquids
    • Oils
    • Powders
    • Tablets
    Operations:
    • Liquid formulation
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  10. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Cerritos, CA, United Statescapteksoftgel.com

    • Capsules
    • Gummies
    • Softgels
    • Tablets
    Operations:
    • Molding
    • Coating
    • Liquid formulation
    • Tablet compression
    • +2 more
    NSF/ANSI 455-2checked Nov 1, 2026
  11. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Buford, GA, United Statescatalystnutra.com

    • Capsules
    • Powders
    Operations:
    • Kitting
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  12. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Fairfield, NJ, United Statescommandnutritionals.com

    • Powders
    Operations:
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  13. DrVita Inc

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Las Vegas, NV, United Statesnatureslab.com

    • Capsules
    • Powders
    • Tablets
    Operations:
    • Kitting
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  14. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Statesville, NC, United Statesdynamicnutraceuticals.com

    • Capsules
    • Powders
    Operations:
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  15. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Corona, CA, United Stateseagleshinegroup.com

    • Capsules
    • Liquids
    • Oils
    • Powders
    • Softgels
    • Tablets
    NSF/ANSI 455-2checked Nov 1, 2026
  16. Says it makes mushroom productscompany website

    Fort Myers, FL, United Statesenovascience.com

    • Capsules
    • Gummies
    • Liquids
    • Powders
    Operations:
    • Molding
    • Liquid formulation
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  17. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Lindon, UT, United Statesevolvecontractmanufacturing.com

    • Capsules
    • Powders
    Operations:
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  18. EW Packaging

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Gardena, CA, United Statesewpackaging.com

    • Capsules
    • Gummies
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Sterilization
    • Kitting
    • Tablet compression
    • Encapsulation
    • +1 more
    NSF/ANSI 455-2checked Nov 1, 2026
  19. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Anaheim, CA, United States4excelsior.com

    • Capsules
    • Gummies
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  20. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Cedartown, GA, United Statesfamehealthlabs.com

    • Capsules
    • Gummies
    • Liquids
    • Oils
    • Powders
    • Tablets
    Operations:
    • Liquid formulation
    • Tablet compression
    • Encapsulation
    NSF/ANSI 455-2checked Nov 1, 2026
  21. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Burnaby, BC, Canadaflorahealth.com

    Health Canada site licencechecked Oct 26, 2026
  22. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Chinaxianzhilou.com

    • Capsules
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Extraction
    • Baking
    • Coating
    • Liquid formulation
    • +3 more
    NSF/ANSI 455-2checked Nov 1, 2026
  23. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Olympia, WA, United Statesfungi.com

    • Capsules
    • Gummies
    • Liquids
    • Powders
    Operations:
    • Extraction
    • Sterilization
    • Liquid formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  24. Gaia Herbs, Inc.

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Brevard, NC, United Statesgaiaherbs.com

    • Capsules
    • Gummies
    • Liquids
    • Powders
    • Tablets
    Operations:
    • Extraction
    • Liquid formulation
    • Encapsulation
    NSF/ANSI 455-2checked Nov 1, 2026
  25. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Commack, NY, United Statesgeminipharm.com

    • Capsules
    • Powders
    • Tablets
    Operations:
    • Coating
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  26. Says it makes mushroom productscompany website

    Tainan, Taiwangeneferm.com

    • Capsules
    • Liquids
    • Powders
    Operations:
    • Sterilization
    • Liquid formulation
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  27. GFR Pharma Ltd.

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Coquitlam, BC, Canadagfrpharma.com

    • Capsules
    • Liquids
    • Oils
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Kitting
    • Coating
    • Liquid formulation
    • Tablet compression
    • +2 more
    NSF/ANSI 455-2checked Nov 1, 2026
  28. Global Widget LLC

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Tampa, FL, United Statesglobalwidget.com

    • Gummies
    Operations:
    • Molding
    • Liquid formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  29. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Anaheim, CA, United Statesgmplabs.com

    • Capsules
    • Gummies
    • Liquids
    • Oils
    • Powders
    • Tablets
    Operations:
    • Coating
    • Liquid formulation
    • Tablet compression
    • Encapsulation
    • +1 more
    NSF/ANSI 455-2checked Nov 1, 2026
  30. Gummi World, LLC

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Austin, TX, United Statesgummiworld.com

    • Gummies
    Operations:
    • Molding
    • Coating
    NSF/ANSI 455-2checked Nov 1, 2026
  31. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Grand Junction, CO, United Stateshybridconfections.com

    • Gummies
    Operations:
    • Molding
    • Coating
    NSF/ANSI 455-2checked Nov 1, 2026
  32. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Henderson, NV, United Statesbulksupplements.com

    • Capsules
    • Powders
    • Softgels
    Operations:
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  33. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Davie, FL, United Stateshealthgenesisprivatelabel.com

    • Capsules
    • Gummies
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  34. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Gilbert, AZ, United Statesherballyyours.net

    • Capsules
    • Liquids
    • Oils
    • Powders
    Operations:
    • Liquid formulation
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  35. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Clifton, NJ, United Statesicelandirect.com

    • Capsules
    • Liquids
    • Oils
    • Powders
    • Softgels
    Operations:
    • Liquid formulation
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  36. ILS Gummies, LLC

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    McKinney, TX, United Statesinnovativegummies.com

    • Gummies
    Operations:
    • Molding
    • Coating
    • Liquid formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  37. Ion Labs, Inc.

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Largo, FL, United Statesionlabs.com

    • Capsules
    • Gummies
    • Liquids
    • Oils
    • Powders
    • Tablets
    Operations:
    • Molding
    • Coating
    • Liquid formulation
    • Tablet compression
    • +2 more
    NSF/ANSI 455-2checked Nov 1, 2026
  38. M&M Lab LLC

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Mill Spring, NC, United Statesmmlabsusa.com

    • Capsules
    • Powders
    Operations:
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  39. MAK Pharma USA LLC

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Randolph, NJ, United Statesmakpharmausa.com

    • Capsules
    • Gummies
    • Softgels
    • Tablets
    NSF/ANSI 455-2checked Nov 1, 2026
  40. Says it makes mushroom productscompany website

    Hauppauge, NY, United Statesmakersnutrition.com

    • Capsules
    • Gummies
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  41. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Torrance, CA, United Statesparagonlabsusa.com

    • Capsules
    • Powders
    • Tablets
    Operations:
    • Coating
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  42. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Orem, UT, United Statesnaturesfusions.com

    • Capsules
    • Liquids
    • Oils
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Kitting
    • Liquid formulation
    • Tablet compression
    • Encapsulation
    • +1 more
    NSF/ANSI 455-2checked Nov 1, 2026
  43. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Lehi, UT, United Statesnaturessunshine.com

    • Capsules
    • Liquids
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Kitting
    • Coating
    • Liquid formulation
    • Tablet compression
    • +2 more
    NSF/ANSI 455-2checked Nov 1, 2026
  44. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Coram, NY, United Statesnaturesvalue.com

    • Capsules
    • Powders
    • Tablets
    Operations:
    • Coating
    • Liquid formulation
    • Tablet compression
    • Encapsulation
    • +1 more
    NSF/ANSI 455-2checked Nov 1, 2026
  45. New Chapter, Inc.

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Brattleboro, VT, United Statesnewchapter.com

    • Capsules
    • Gummies
    • Liquids
    • Powders
    • Softgels
    • Tablets
    NSF/ANSI 455-2checked Nov 1, 2026
  46. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Irvine, CA, United Statesngwellness.com

    • Capsules
    • Gummies
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Molding
    • Coating
    • Tablet compression
    • Encapsulation
    • +1 more
    NSF/ANSI 455-2checked Nov 1, 2026
  47. NHS U.S., LLC

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Arlington, VA, United Statesnestleusa.com

    • Capsules
    • Gummies
    • Liquids
    • Oils
    • Softgels
    • Tablets
    Operations:
    • Molding
    • Coating
    • Liquid formulation
    • Tablet compression
    • +2 more
    NSF/ANSI 455-2checked Nov 1, 2026
  48. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Ogden, UT, United Statesnutraceutical.com

    • Capsules
    • Gummies
    • Liquids
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Pasteurization
    • Coating
    • Liquid formulation
    • Tablet compression
    • +2 more
    NSF/ANSI 455-2checked Nov 1, 2026
  49. NutraStar

    USDA Organic

    USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Farmingdale, NJ, United Statesnutrastar.com

    • Capsules
    • Gummies
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  50. USDA Organic certificate lists mushroom itemsUSDA Organic Integrity Database

    Vineyard, UT, United Stateselitemp.com

    • Capsules
    • Gummies
    • Powders
    • Softgels
    • Tablets
    Operations:
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026

View all 81 in the directory →

Compare mushroom supplement manufacturers at a glance

  • The 81 mushroom supplement manufacturers listed here are in 5 countries; the most are in the United States (73), Canada (3) and China (3).
  • The most common dosage forms in the listed scope of these 81 mushroom supplement manufacturers are capsules (68), powders (67) and tablets (47).
  • 77 of the 81 mushroom supplement manufacturers list a company website.
ManufacturerLocationDosage forms in listed scopeCertificationLast checked
Access Business Group, LLCAda, MI, United StatesCapsules, Powders, Softgels, TabletsNSF/ANSI 455-2, USDA Organic
All Points ManufacturingVallejo, CA, United States—Informed Manufacturer (not a GMP audit), USDA Organic
Arizona Custom Blends Manufacturing, LLCTempe, AZ, United StatesCapsules, Powders, SoftgelsNSF/ANSI 455-2, USDA Organic
Arnet Pharmaceutical CorporationDavie, FL, United StatesCapsules, Powders, Softgels, TabletsNSF/ANSI 455-2
Bactolac Pharmaceutical, Inc.Hauppauge, NY, United StatesCapsules, Powders, Softgels, TabletsNSF/ANSI 455-2, USDA Organic
Beehive Botanicals, Inc.Hayward, WI, United StatesCapsules, Liquids, PowdersNSF/ANSI 455-2, USDA Organic
Berkeley Nutritional Manufacturing Corporation DBA Protein ResearchLivermore, CA, United StatesCapsules, Powders, TabletsNSF/ANSI 455-2, USDA Organic
Bio-Botanica, Inc.Hauppauge, NY, United StatesCapsules, Liquids, Oils, Powders, TabletsNSF/ANSI 455-2
BL Bio Lab LLCClearwater, FL, United StatesCapsules, Liquids, Oils, Powders, TabletsNSF/ANSI 455-2, USDA Organic
Captek Softgel International, Inc.Cerritos, CA, United StatesCapsules, Gummies, Softgels, TabletsNSF/ANSI 455-2, USDA Organic
Catalyst NutraceuticalsBuford, GA, United StatesCapsules, PowdersNSF/ANSI 455-2, Informed Manufacturer (not a GMP audit), USDA Organic
COMMAND Nutritionals LLCFairfield, NJ, United StatesPowdersNSF/ANSI 455-2
DrVita IncLas Vegas, NV, United StatesCapsules, Powders, TabletsNSF/ANSI 455-2, USDA Organic
Dynamic NutraceuticalsStatesville, NC, United StatesCapsules, PowdersNSF/ANSI 455-2, Informed Manufacturer (not a GMP audit)
Eagleshine Group Inc.Corona, CA, United StatesCapsules, Liquids, Oils, Powders, Softgels, TabletsNSF/ANSI 455-2, USDA Organic
Enova Science, LLCFort Myers, FL, United StatesCapsules, Gummies, Liquids, PowdersNSF/ANSI 455-2
Evolve Contract ManufacturingLindon, UT, United StatesCapsules, PowdersNSF/ANSI 455-2, USDA Organic
EW PackagingGardena, CA, United StatesCapsules, Gummies, Powders, Softgels, TabletsNSF/ANSI 455-2, USDA Organic
Excelsior Nutrition Inc DBA 4ExcelsiorAnaheim, CA, United StatesCapsules, Gummies, Powders, Softgels, TabletsNSF/ANSI 455-2, Informed Manufacturer (not a GMP audit), USDA Organic
FAME Health Labs, LLCCedartown, GA, United StatesCapsules, Gummies, Liquids, Oils, Powders, TabletsNSF/ANSI 455-2
Flora Manufacturing & Distributing LtdBurnaby, BC, Canada—Health Canada site licence, USDA Organic
Fujian Xianzhilou Biological Science and Technology Co., Ltd.ChinaCapsules, Powders, Softgels, TabletsNSF/ANSI 455-2, USDA Organic
Fungi Perfecti, LLCOlympia, WA, United StatesCapsules, Gummies, Liquids, PowdersNSF/ANSI 455-2, USDA Organic
Gaia Herbs, Inc.Brevard, NC, United StatesCapsules, Gummies, Liquids, Powders, TabletsNSF/ANSI 455-2, USDA Organic
Gemini Pharmaceuticals, Inc.Commack, NY, United StatesCapsules, Powders, TabletsNSF/ANSI 455-2, USDA Organic
First 25 of 81 mushroom supplement manufacturers, in the same order as the list above. Source: the public listings of NSF, Health Canada, Informed Manufacturer and the USDA Organic Integrity Database, last checked November 1, 2026. How we verify

Questions buyers ask

How do I choose a mushroom supplement manufacturer in the USA?

Start with the USA list, check the exact facility and its certificate scope, and confirm private label mushroom supplements. Ask for the minimum order, first-run and reorder lead times, testing plan and an itemized quote. Website capabilities are company claims unless a separate registry basis is shown; confirm the proposed work directly.

What should I ask a mushroom supplement manufacturer?

Ask whether the ingredient is fruiting body, mycelium or both, whether it is a whole powder or an extract and how the extract is standardised, how they confirm the species, and what they test for, such as heavy metals and microbes.

Do you verify that these companies make mushroom products?

No. A company is listed here when one of its facilities is on a public registry we check and either its USDA Organic certificate lists mushroom items or its own website says it makes mushroom products. The USDA Organic item list is the certifier’s record of what the operation is certified to handle organically, as we found it in the USDA Organic Integrity Database on the date shown; it covers organic items only and is not a test of any product. A website claim is the company’s own statement: we keep the quote, the page and the date we checked. Each card says which applies. Confirm either with the manufacturer before you rely on it.

What should I ask for in a quote request?

Ask for minimum order quantity, lead times, formulation options, testing and certificates of analysis, in writing. In detail: ask about minimum order quantity (MOQ) per SKU, lead time for a first run and for reorders, whether they offer stock formulas or custom formulation, who sources raw materials, what testing they run (identity, potency, microbiological, heavy metals) and whether you receive a certificate of analysis (COA) per batch, and whether they support the label claims you plan to make. Terms vary widely by manufacturer, so compare written answers rather than assumptions.

How do I verify a manufacturer’s GMP certification myself?

Ask the manufacturer for their current certificate and the exact facility address it covers, then look that facility up on the certifier’s public listing (for NSF/ANSI 455, NSF’s online listings). Certificates apply to specific sites, so make sure the facility that will make your product is the one listed. Each profile here links to the public listing we checked and the date we checked it.