23 protein powder manufacturers in California have a GMP-certified facility (NSF/ANSI 455-2) or an Informed Manufacturer certified facility; for 15 of them a USDA Organic certificate lists protein items, and 13 say on their own website that they make protein products. The most are in Anaheim (3), Valencia (3) and Irvine (2). USDA Organic item lists checked October 1, 2026; website claims checked October 16, 2026; certification data checked November 1, 2026.
Looking for a protein powder manufacturer in the USA? Compare the listings below for private label protein powder. Use the country and state links to narrow your shortlist.
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Order: featured, listings with a website, then A–Z.
Says it makes protein productscompany website
Rancho Cucamonga, CA, United Statesamaxinutrition.com
Says it makes protein productscompany website
Livermore, CA, United Statesproteinresearch.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Corona, CA, United Stateseagleshinegroup.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Anaheim, CA, United States4excelsior.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Irvine, CA, United Statesivcinc.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Riverside, CA, United Stateskelkerpharma.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Tracy, CA, United Stateskorupacificpackaging.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Valencia, CA, United Stateslieflabs.com
Says it makes protein productscompany website
Torrance, CA, United Statesparagonlabsusa.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Anaheim, CA, United Statesnellsonllc.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Irvine, CA, United Statesngwellness.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Rancho Dominguez, CA, United Statesorganicbynatureinc.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Vista, CA, United Statesprimarchmfg.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Benicia, CA, United Statesproformlabs.com
Says it makes protein productscompany website
Santa Rosa, CA, United Statesrandaloptimal.com
Says it makes protein productscompany website
Costa Mesa, CA, United Statesrobinsonpharma.com
Says it makes protein productscompany website
Valencia, CA, United Statessimpsonlabs.net
Says it makes protein productscompany website
Anaheim, CA, United Statessklabs.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Valencia, CA, United States6degreescollective.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Oceanside, CA, United Statessujalife.com
Says it makes protein productscompany website
Norco, CA, United Statesaurasciences.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Stanton, CA, United Stateswhitebottle.com
USDA Organic certificate lists protein itemsUSDA Organic Integrity Database
Ontario, CA, United States
| Manufacturer | Location | Dosage forms in listed scope | Certification | Last checked |
|---|---|---|---|---|
| Amaxi Nutrition Products, Inc. | Rancho Cucamonga, CA | Powders | NSF/ANSI 455-2 | |
| Berkeley Nutritional Manufacturing Corporation DBA Protein Research | Livermore, CA | Capsules, Powders, Tablets | NSF/ANSI 455-2, USDA Organic | |
| Eagleshine Group Inc. | Corona, CA | Capsules, Liquids, Oils, Powders, Softgels, Tablets | NSF/ANSI 455-2, USDA Organic | |
| Excelsior Nutrition Inc DBA 4Excelsior | Anaheim, CA | Capsules, Gummies, Powders, Softgels, Tablets | NSF/ANSI 455-2, Informed Manufacturer (not a GMP audit), USDA Organic | |
| International Vitamin Corporation | Irvine, CA | Capsules, Powders, Softgels, Tablets | NSF/ANSI 455-2, USDA Organic | |
| Kelker Pharma, Inc. | Riverside, CA | Capsules, Powders, Tablets | NSF/ANSI 455-2 | |
| Koru Pacific Packaging, Inc | Tracy, CA | Powders | NSF/ANSI 455-2, USDA Organic | |
| Lief Organics, LLC | Valencia, CA | Capsules, Powders, Tablets | NSF/ANSI 455-2, USDA Organic | |
| Naturalife Eco Vite Labs., Inc. DBA Paragon Laboratories | Torrance, CA | Capsules, Powders, Tablets | NSF/ANSI 455-2, USDA Organic | |
| Nellson Nutraceutical, LLC | Anaheim, CA | Powders | NSF/ANSI 455-2, USDA Organic | |
| New Generation Wellness Inc. | Irvine, CA | Capsules, Gummies, Powders, Softgels, Tablets | NSF/ANSI 455-2, USDA Organic | |
| Organic by Nature, Inc. | Rancho Dominguez, CA | Capsules, Powders, Tablets | NSF/ANSI 455-2, USDA Organic | |
| Primarch Manufacturing | Vista, CA | Capsules, Powders | NSF/ANSI 455-2 | |
| Pro-Form Laboratories | Benicia, CA | Powders | NSF/ANSI 455-2 | |
| Randal Optimal Nutrients, Inc. | Santa Rosa, CA | Capsules, Powders, Softgels, Tablets | NSF/ANSI 455-2 | |
| Robinson Pharma, Inc. | Costa Mesa, CA | Capsules, Gummies, Liquids, Oils, Powders, Softgels, +1 more | NSF/ANSI 455-2, USDA Organic | |
| Simpson Labs LLC | Valencia, CA | Capsules, Powders | NSF/ANSI 455-2, Informed Manufacturer (not a GMP audit), USDA Organic | |
| SK Laboratories Inc | Anaheim, CA | Capsules, Powders, Tablets | NSF/ANSI 455-2 | |
| Solevy Co. LLC DBA 6 Degrees Collective | Valencia, CA | Powders | NSF/ANSI 455-2, NSF/ANSI 455-3, NSF/ANSI 455-4 | |
| Suja Life, LLC. | Oceanside, CA | Liquids | NSF/ANSI 455-2, USDA Organic | |
| Wellnes Holding LLC dba Aura Sciences | Norco, CA | Gummies, Softgels | NSF/ANSI 455-2 | |
| White Bottle, Inc. | Stanton, CA | Capsules, Powders, Softgels, Tablets | NSF/ANSI 455-2 | |
| California Packaging Centers | Ontario, CA | Powders | NSF/ANSI 455-2 |
Separate ingredient production from the finished blend. Arla Foods Ingredients describes removing water from whey through filtration, evaporation and drying. A finished-product manufacturer may buy protein ingredients, blend them with the other formula components and fill tubs or sachets. Ask who produces the protein ingredient and who blends, tests and packages your product; a powder-filling capability does not establish in-house protein extraction.
There is no single shelf life for every supplement. FDA’s dietary supplement CGMP guidance says an expiration date is not required by that rule, but a date used on a label should have supporting data. Ask for stability evidence for your formula in the proposed packaging and storage conditions; a manufacturing date alone does not tell you how long the product will meet its specifications.
Sources checked . General buyer guidance; not a check of any listed company’s process.
Start with the USA list, check the exact facility and its certificate scope, and confirm private label protein powder. 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.
Ask which protein sources they work with, whether they develop flavours in-house, which pack formats they fill (tubs, pouches or stick packs), and how they test protein content and contaminants such as heavy metals. Ask for a sample made with your formula, and get MOQ and lead time in writing.
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 protein items or its own website says it makes protein 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.
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.
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.
Separate ingredient production from the finished blend. Arla Foods Ingredients describes removing water from whey through filtration, evaporation and drying. A finished-product manufacturer may buy protein ingredients, blend them with the other formula components and fill tubs or sachets. Ask who produces the protein ingredient and who blends, tests and packages your product; a powder-filling capability does not establish in-house protein extraction.
There is no single shelf life for every supplement. FDA’s dietary supplement CGMP guidance says an expiration date is not required by that rule, but a date used on a label should have supporting data. Ask for stability evidence for your formula in the proposed packaging and storage conditions; a manufacturing date alone does not tell you how long the product will meet its specifications.
Check the facility address and the scope shown on its registry record, then confirm that the proposed work will take place at that site in California. Ask for a written quote with minimum order, testing, packaging, freight and lead times. A company address alone does not establish where your order will be made.