Our quality promise from start to finish


Exceptional products. Highest manufacturing standards. Experts in personalized, scientific wellness.

A benchmark for excellence

When it comes to quality, Thorne doesn’t just meet the standard – Thorne sets the standard. Our processes, our products, our facilities, and our people are the benchmark for excellence in the supplement industry. We are committed to creating the cleanest manufacturing processes, investing in the most comprehensive testing, and sourcing high-quality ingredients.

Process
4 rounds

of testing
We have two in-house laboratories that enable us to conduct four rounds of testing, from analyzing the purity of raw materials to confirming the shelf life of finished formulas.
Product
0 unnecessary

ingredients
Every Thorne formula is guided by our “No List” of fillers, additives, and allergens that we refuse to use in our products. The “No List” speaks to our commitment to provide clean, high-quality nutritional supplements that contain the purest possible ingredients to support your health. See the “No List”
here.
Campus

753,500+ square foot


manufacturing space
Our nutritional supplements are manufactured in the United States, at our state-of-the-art campus in Summerville, South Carolina.
People with masks
Our processes
People with masks
Our processes
Person writing

From our processes and quality controls to our steadfast integrity with U.S. and international regulations, we invest in our advanced in-house laboratories and third-party testing, as well as state-of-the-art equipment, giving us total control over our ingredients and formulas.

4 rounds of testing

Every supplement we manufacture undergoes four rounds of testing to ensure every supplement meets our high standards. As soon as a raw material enters our facility, we test its identity and purity. Whether it’s mixing ingredients, testing a finished product before it’s shipped, or monitoring its shelf life, quality guides our every decision.

Round 1
Raw materials and components
We test every raw material and component. In our in-house laboratories, we screen for raw material contaminants.
Round 2
In-process testing
In-process testing helps ensure the correct amount of ingredients are used in our formulations, and we stringently check for any bottle, label, or capsule defects throughout the manufacturing process.
Round 3
Finished product testing
Before going to market, finished products are tested to confirm the identity, potency, and purity of the ingredients, and to confirm that no microbiological contamination occurred during manufacturing.
Round 4
Stability testing
We test a product's stability to confirm it will meet its label claim up to the expiration date.
By the numbers
100,000+
The number of tests carried out each year in our state-of-the-art Quality Control laboratories.
900+
The number of quality inspections and checks conducted throughout our manufacturing facility each day.
400+
The number of documented checks our Production team can perform each day for just one of our encapsulation runs.
3.5%
The percentage of Thorne’s annual revenues spent on Quality.
People with masks
Our products
People with masks

Our products

Scientist
The best nutritional supplements begin with the best ingredients. Thorne’s formulas are built on a foundation of ingredients that are both clinically researched and sustainably sourced. To ensure the purity and potency of our ingredients, we implement a strict ingredient control system.
Every ingredient is quarantined until it meets specification for identification, concentration, and purity. As a result, every batch of Thorne’s supplements delivers optimal absorption, safety, and efficacy.

Effective ingredients, effective formulas



Absorption
Our formulas are designed to deliver the most absorbable forms of nutrients.
Learn More
Clinical research
We only use ingredients that have been validated by clinical research to be safe and effective for their intended use.
Learn More
Allergens
We test and formulate products with careful consideration for allergens and sensitivities.
Learn More
By the numbers
1.2 billion
The number of capsules that Thorne produces annually.
1.2 million
The number of kilograms of powder we mix annually for our supplements.
16.1 million
The number of bottles of product produced annually at our South Carolina manufacturing campus.
60+
The number of substances on Thorne’s “No List” that are never used in a Thorne supplement. The “No List” is a living document, which we review annually by referencing regulatory documents from national and international organizations, like the NFL, MLB, and the World Anti-Doping Agency. Because we control the manufacturing process, we have total authority over what does and does not go into our products. We refuse to use unnecessary fillers, like magnesium stearate, that can inhibit absorption. We ensure optimal quality in every Thorne supplement by only including excipients that will not interfere with the quality of the active ingredients.
40+
The number of Thorne formulas and ingredients currently in clinical trials worldwide. Being able to rely on the safety and efficacy of our nutritional supplements is the motivating force behind our clinical trials program. Our collaborations with independent researchers at world-class institutions like Mayo Clinic and the National Institutes of Health (NIH) enable us to confirm the efficacy and safety of our products as we explore new potential for them.
Large building
Our campus
Large building

Our campus

Scientist
Our nutritional supplements are manufactured in the United States using globally sourced ingredients at our campus in Summerville, South Carolina, meaning we have total control over what goes into our products.
But don't just take our word for it! Our manufacturing and warehousing facilities undergo regular third-party certification audits and regulatory audits to ensure compliance with the latest Good Manufacturing Practices (GMP) standards and regulations. These audits are conducted by independent certification entities, including NSF and Australia’s Therapeutic Goods Administration (TGA), which has the most stringent cGMP regulations and is often recognized as the toughest regulatory agency in the world.
Where trusted health solutions are formulated
cGMP Certified
Thorne has an exemplary record of compliance with the current Good Manufacturing Practices (cGMP), set by the U.S. Food and Drug Administration (FDA). Our manufacturing facility, warehouses, and shipping centers are inspected and have passed every inspection without issuance of an FDA Form 483.

Certificate of GMP Compliance of a Manufacturer
NSF Certified
Thorne’s facility is NSF certified and manufactures more than 20 NSF Certified for Sport® products, which gives athletes complete confidence in our nutritional supplements. This is particularly important for the athletes from more than 100 professional and U.S. National teams and organizations – like the NBA, NFL, and UFC – that trust Thorne for safe and effective nutritional support.

NSF® Certificate
NSF Certified for Sport® Certificate
GRMA certified
Thorne’s operations are audited and certified by the Global Retailer and Manufacturer Alliance (GRMA), a nonprofit dedicated to the advancement of worldwide quality and safety standards for health and wellness products. GRMA recognizes companies, like Thorne, that go above and beyond the minimum requirements for good manufacturing practices.

Certification of Conformance NSF/ANSI 455-2
TGA Certified
Thorne has an A rating from Australia’s Therapeutic Goods Administration (TGA), widely recognized as the toughest regulatory agency in the world. Only a handful of U.S. companies have achieved certification, and Thorne was the first U.S. nutritional supplement company to be fully certified.

TGA GMP Certificate
549,000+ square feet
The total area dedicated to manufacturing our nutritional supplements at our campus in Summerville, South Carolina – that's nearly 10 football fields!
400 cubic feet
The size of our Munson rotary batch blender – the world's largest blender dedicated to mixing nutritional supplements. Thorne's Engineering team custom-designed its fittings, and the machine was assembled onsite in our South Carolina manufacturing facility.
People with masks

Our people

Large building

Our people

Scientist

Our people are our most important investment. With more than 700 employees, and each one requiring training in quality best practices, we do


employees, and each one requiring training in quality best practices, we do

everything in our power to make high-quality nutritional supplements with

the purest possible ingredients.

Our commitment to quality

At Thorne, we not only invest in our supplements, we invest in our people. It takes dedicated employees who require years of training and specialized expertise to collectively run a company that creates the most innovative nutritional supplements in the industry.

By the numbers

65,000+

The number of hours dedicated to training Thorne employees on current Good Manufacturing Practices (cGMP), such as gowning and hygiene practices, quality control, and many more.

100%

The percentage of Thorne employees who receive training – four times each year – on current Good Manufacturing Practices (cGMP).

12%

The percentage of Thorne’s workforce who work in the Quality department.