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About Natural Alternatives International

NAI Natural Alternatives InternationalNatural Alternatives International (NAI) is an international formulator and manufacturer of customized nutritional supplements. NAI worked with Dr. Harris to develop, market and patent CarnoSyn® and owns the extensive CarnoSyn® patent estate. When NAI backs an ingredient, you can be certain: 

  • Formulations are based on scientific research
  • Clinical research studies are properly designed and carried out
  • Global patents are enforced and provide exclusivity
  • Quality assurance testing is rigorous
  • Manufacturing and packaging is premium
  • Marketing support is extensive

Founded in 1980, NAI provides customized solutions for nutritional product needs. Our health solutions begin with rigorous clinical research, during which we test and evolve ways to support strong, resilient, healthy bodies. In addition to testing our formulations, we also provide manufacturing, processing, patenting, international regulatory compliance, and marketing services. With our state-of-the-art manufacturing facilities in San Marcos, California and Lugano, Switzerland, and a sales presence in Yokohama, Japan, we are positioned to fulfill the needs of our customers around the world.