SK Laboratories
SK Laboratories is a contract manufacturer of dietary supplements operating a solar-powered facility at 5420 East La Palma Avenue in Anaheim, California. Founded in 1992, the company specializes in protein powders, pre-workout formulas, weight-management formulations, two-piece capsules, tablets, and powdered supplements. The company's NSF/ANSI 455-2 Good Manufacturing Practices certification was registry-confirmed against the NSF public directory on 2026-06-11 (the January 2026 A-rating detail remains company-reported); it is listed in the NPA GMP Certified Companies public directory (listing checked 2026-06-11); its QAI organic certification appears in the USDA Organic Integrity Database with Certified status; and it self-reports NSF cGMP, NSF for Sport, and UL cGMP audits. The facility is FDA-registered and states California Proposition 65 compliance. The company markets itself across roughly 51 to 200 employees.
Anaheim, California
Directory Listing · Certifications Confirmed
One or more certifications independently confirmed via public registries.
What this means →- MOQMOQ (Minimum Order Quantity)The smallest production run a manufacturer will accept for an order.
- Not publicly disclosed
- LEAD TIMELead TimeThe time from order placement to finished product delivery.
- Not publicly disclosed
§1Editorial assessment
SK Laboratories is a contract manufacturer of dietary supplements operating a solar-powered facility at 5420 East La Palma Avenue in Anaheim, California. Founded in 1992, the company specializes in protein powders, pre-workout formulas, weight-management formulations, two-piece capsules, tablets, and powdered supplements. The company's NSF/ANSI 455-2 Good Manufacturing Practices certification was registry-confirmed against the NSF public directory on 2026-06-11 (the January 2026 A-rating detail remains company-reported); it is listed in the NPA GMP Certified Companies public directory (listing checked 2026-06-11); its QAI organic certification appears in the USDA Organic Integrity Database with Certified status; and it self-reports NSF cGMP, NSF for Sport, and UL cGMP audits. The facility is FDA-registered and states California Proposition 65 compliance. The company markets itself across roughly 51 to 200 employees.
§2Our review
The six checks in our review, applied before any name appears in the directory. Each check is auto-derived from public evidence on this profile.
§3Inspection history
§4Certifications
2 of 7 certifications independently confirmed. What this means
§5Capability matrix
- PRODUCT TYPES
- Capsules · Tablets · Powders
- CAPABILITIES
- Contract Manufacturing · Custom Formulation · Private Label · Capsules · Tablets · Powders
- DOSAGE FORMS
- capsules · tablets · powders
§6Sources
§7 · What we don't know
- Minimum order quantities not disclosed publicly
Dietary supplement manufacturers must comply with 21 CFR Part 111 (Current Good Manufacturing Practice for dietary supplements). This includes requirements for personnel, facilities, equipment, production, laboratory operations, and record-keeping.
Disclosures
- No material connection exists between Inventory Ready and this manufacturer
For the check-by-check breakdown that produces this vendor's score, see our scoring framework. The connection map between SK Laboratories and other vendors, capabilities, and certifications is in the manufacturer atlas.
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