Pre-Workout Manufacturers in California
7 pre-workout manufacturers in California have a GMP-certified facility (NSF/ANSI 455-2) or an Informed Manufacturer certified facility; for 3 of them a USDA Organic certificate lists pre-workout items, and 5 say on their own website that they make pre-workout products. The most are in Anaheim (2). USDA Organic item lists checked October 1, 2026; website claims checked October 16, 2026; certification data checked November 1, 2026.
Looking for a pre workout manufacturer in the USA? Compare the listings below for private label pre workout. Use the country and state links to narrow your shortlist.
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All 7 manufacturers
Order: featured, listings with a website, then A–Z.
Excelsior Nutrition Inc DBA 4Excelsior
USDA OrganicUSDA Organic certificate lists pre-workout 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, 2026Says it makes pre-workout productscompany website
Riverside, CA, United Stateskelkerpharma.com
- Capsules
- Powders
- Tablets
Operations:- Tablet compression
- Encapsulation
- Dry formulation
NSF/ANSI 455-2checked Nov 1, 2026Lief Organics, LLC
USDA OrganicUSDA Organic certificate lists pre-workout itemsUSDA Organic Integrity Database
Valencia, CA, United Stateslieflabs.com
- Capsules
- Powders
- Tablets
Operations:- Tablet compression
- Encapsulation
- Dry formulation
NSF/ANSI 455-2checked Nov 1, 2026NHK Laboratories, Inc.
USDA OrganicSays it makes pre-workout productscompany website
Santa Fe Springs, CA, United Statesnhklabs.com
- Capsules
- Powders
- Softgels
- Tablets
Operations:- Coating
- Tablet compression
- Encapsulation
NSF/ANSI 455-2checked Nov 1, 2026Organic by Nature, Inc.
USDA OrganicUSDA Organic certificate lists pre-workout itemsUSDA Organic Integrity Database
Rancho Dominguez, CA, United Statesorganicbynatureinc.com
- Capsules
- Powders
- Tablets
Operations:- Kitting
- Tablet compression
- Encapsulation
- Dry formulation
NSF/ANSI 455-2checked Nov 1, 2026Says it makes pre-workout productscompany website
Anaheim, CA, United Statessklabs.com
- Capsules
- Powders
- Tablets
Operations:- Coating
- Tablet compression
- Encapsulation
- Dry formulation
NSF/ANSI 455-2checked Nov 1, 2026Says it makes pre-workout productscompany website
Temecula, CA, United Statesvitaplusinter.com
- Capsules
- Gummies
- Powders
- Tablets
Operations:- Molding
- Liquid formulation
- Tablet compression
- Encapsulation
- +1 more
NSF/ANSI 455-2checked Nov 1, 2026
Compare pre-workout manufacturers at a glance in California
- The most common dosage forms in the listed scope of these 7 pre-workout manufacturers in California are capsules (7), powders (7) and tablets (7).
- 7 of the 7 pre-workout manufacturers in California list a company website.
| Manufacturer | Location | Dosage forms in listed scope | Certification | Last checked |
|---|---|---|---|---|
| Excelsior Nutrition Inc DBA 4Excelsior | Anaheim, CA | Capsules, Gummies, Powders, Softgels, Tablets | NSF/ANSI 455-2, Informed Manufacturer (not a GMP audit), USDA Organic | |
| Kelker Pharma, Inc. | Riverside, CA | Capsules, Powders, Tablets | NSF/ANSI 455-2 | |
| Lief Organics, LLC | Valencia, CA | Capsules, Powders, Tablets | NSF/ANSI 455-2, USDA Organic | |
| NHK Laboratories, Inc. | Santa Fe Springs, CA | Capsules, 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 | |
| SK Laboratories Inc | Anaheim, CA | Capsules, Powders, Tablets | NSF/ANSI 455-2 | |
| Vita Plus Inter Co., Ltd | Temecula, CA | Capsules, Gummies, Powders, Tablets | NSF/ANSI 455-2 |
Questions buyers ask
How do I choose a pre workout manufacturer in the USA?
Start with the USA list, check the exact facility and its certificate scope, and confirm private label pre workout. 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 pre-workout manufacturer?
Ask how they make sure every serving gets the same dose of each active, especially stimulants, how they develop flavours, which pack formats they fill, and whether they can work with a product certification programme for sport, such as NSF Certified for Sport, if you plan to use one.
Do you verify that these companies make pre-workout 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 pre-workout items or its own website says it makes pre-workout 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.
How do I compare pre-workout manufacturers in California?
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.