About Thorne Research Health Supplements

Go to Thorne Research products

At Thorne, we refuse to take short cuts. We have invested in doing comprehensive testing, sourcing the highest quality ingredients, creating a clean manufacturing process, and protecting the environment. Our team of medical professionals, researchers, and engineers lead with science, thoughtfully refining every product and process. That is why we are the brand trusted by healthcare practitioners, U.S. National Teams, and families around the world for more than 30 years.

Thorne cares deeply about where our ingredients come from. We partner only with suppliers whose practices emphasize quality, science, and responsibility. Better ingredients means better potency, absorption, and digestibility - and ultimately better health.

Test, test and test again

Four rounds of testing

We have invested in two state-of-the-art in-house laboratories that allow us to conduct four rounds of testing, while most competitors test only one or two times.

Round 1

Raw materials and components. We test every raw material and component. In our in-house laboratory we screen for more than 1,000 contaminants.

Round 2

In-process testing. We test every in-process batch for homogeneity and identity to confirm consistency.

Round 3

Finished product testing. We test every finished product to ensure its identity, potency, and purity have been maintained and that there has been no microbiological contamination during manufacturing.

Round 4

Stability testing. We test for product stability to confirm that our product will meet the label claim up to the product's time of expiration.


  • Thorne has an exemplary record of compliance with the Current Good Manufacturing Practices (cGMP), set by the U.S. Food and Drug Administration. Our manufacturing facility, warehouses, and shipping centers are regularly inspected and have passed every inspection without issuance of an FDA Form 483.
  • Thorne received an A1 rating from Australia's Therapeutic Goods Administration, widely recognized as the toughest regulatory agency in the world. Only a handful of U.S. companies have achieved certification, and Thorne is the first U.S. nutritional supplement company to be fully certified.
  • Thorne has an NSF Certified facility and manufactures more than 30 NSF Certified for Sport® products which gives athletes complete confidence in Thorne products. This is particularly important for the 11 U.S. National Teams we partner with as their exclusive provider of nutritional supplements.
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