Natural Alternatives International
Carlsbad, CA
Profile updated: March 27, 2026
Natural Alternatives International (NAI) is a publicly traded (NASDAQ: NAII) contract manufacturer of nutritional supplements headquartered in Carlsbad, California. Founded over 45 years ago, NAI provides formulation, manufacturing, and marketing support services for dietary supplement brands. The company specializes in private-label contract manufacturing and holds international regulatory approvals including NSF GMP, NSF Certified for Sport, TGA (Therapeutic Goods Administration, Australia), and Swissmedic. NAI reported $130 million in annual revenue for fiscal year 2025, with private-label contract manufacturing sales growing 17.7% year-over-year. The company also develops proprietary ingredients, including its beta-alanine products under the CarnoSyn and TriBsyn brands. NAI employs over 500 people and maintains manufacturing facilities in Southern California.
Min. Order
Not publicly disclosed
Lead Time
Not publicly disclosed
Product Types
Private Label Supplements, Custom Formulated Supplements, Capsule Supplements, Tablet Supplements, Powder Supplements, Proprietary Ingredients (CarnoSyn, TriBsyn)
Capabilities
Large-Scale Contract Manufacturing, Private Label Manufacturing, Custom Formulation Development, Proprietary Ingredient Development, NSF Certified for Sport Testing, International Regulatory Compliance (TGA, Swissmedic, Health Canada), Marketing Support Services, 500+ Employees
Dosage Forms
Certifications
0 of 3 certifications independently confirmed. What this means
Key Regulatory Concepts
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.
Review Notes
NASDAQ-traded (NAII) contract manufacturer in Carlsbad, CA. 45+ year operating history. $130M revenue (FY2025). Private-label CM sales growing 17.7% YoY. NSF GMP, NSF Certified for Sport, TGA, Swissmedic certified (self-reported). 500+ employees. Enterprise-tier manufacturer with likely high minimum order quantities. Proprietary ingredient developer (CarnoSyn beta-alanine). Public company with SEC reporting oversight. No FDA warning letters or recalls found.
Sources
- Natural Alternatives International - Official Website(2026-03-27)
- NASDAQ - NAII Stock Profile(2026-03-27)
- Yahoo Finance - NAII Financial Data(2026-03-27)
- GlobeNewsWire - NAI Q1 FY2026 Results(2026-03-27)
Disclosures
- No material connection exists between Inventory Ready and this manufacturer
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