Is Thorne Research Made in USA?
Last checked Nov 9, 2026 · 13 verified products · see the evidence
Verdict · checked Nov 8, 2026
Mostly yes
Thorne makes nearly all of its supplements at its own campus in Summerville, South Carolina. Thorne's quality page says: "Our nutritional supplements are manufactured in the United States using globally sourced ingredients at our campus in Summerville, South Carolina," and describes a "753,500+ square foot manufacturing space." A Thorne article adds that "From capsules to powders, nearly all are manufactured on-site at Thorne's state-of-the-art facility in Summerville, South Carolina."
| Product line | Made in | Status |
|---|---|---|
| Capsules and tablets (multivitamins, vitamin D, B-complex, zinc, bone support) | Summerville, SC (globally sourced ingredients) | Made in USA |
| Powders (Magnesium Bisglycinate) | Summerville, SC (globally sourced ingredients) | Made in USA |
| Liquid-filled gel capsules and softgels (Super EPA, Omega-3 with CoQ10) | Not stated by the brand (outside manufacturing partners) | Origin not stated |
Two caveats. The ingredients are globally sourced, not all American. And some products are made by outside partners: Thorne says that "For the few wellness solutions not yet made in-house, such as our liquid-filled gel capsules, we research and audit the top manufacturing facilities that meet our rigorous specifications," without saying where those facilities are. That covers softgel fish oils such as Super EPA, whose product page states no origin. Capsules, tablets and powders are the safest bet for a Summerville-made Thorne product.
How we checked: On 2026-11-08 we read Thorne's quality page and its Take 5 Daily article on who makes its supplements, and checked current thorne.com product pages for Super EPA and Basic Nutrients 2/Day for an origin line (neither has one).
Sources: Thorne quality: manufactured in the United States at our campus in Summerville, South Carolina · Thorne: nearly all manufactured on-site in Summerville; gel capsules made by audited partners · Thorne Super EPA (no origin stated)
American Score
Average American Score across 13 listed products. Only products at 70% or higher appear on this site.
Manufacturing Details
- Made in
- Summerville, SC
- Headquarters
- Summerville, SC
- Location detail
- Specific city confirmed
- History
- Established record of US manufacturing
- Founded
- 1984
- Note
- Some product lines manufactured overseas
How we verified Thorne Research
Most recent check: Nov 9, 2026
From the brand's website
“…Carolina, Thorne manufactures supplements in the USA using globally sourced ingredients.”
thorne.com · checked Nov 9, 2026
Store listings
We read the live store listing for 13 of the 13 Thorne Research products on this page (most recently Nov 9, 2026). None of them states where the product is made, so these products rely on the brand-level evidence above.
Ongoing monitoring
Under review. A source reports a possible change we are still confirming:
“P&G is acquiring supplement brand Thorne for $3.8 billion.”
cnbc.com · checked Sep 29, 2026
These checks are run by our software on a schedule: brand websites are re-read about every three weeks, store listings weekly, and news is scanned monthly. Every flag is checked against its original source before anything on this page changes. How the American Score works.
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About Thorne Research
Thorne makes nearly all its capsules, tablets and powders at its own campus in Summerville, South Carolina, from globally sourced ingredients. Its softgels are made by outside manufacturers.
Made on one campus in Summerville
Thorne was founded in 1984. Its website says its supplements "are manufactured in the United States using globally sourced ingredients at our campus in Summerville, South Carolina." The Summerville site is NSF Certified for Sport, and products such as the Magnesium Bisglycinate powder and Vitamin D-5000 capsules carry that mark.
The products made there include the Basic Nutrients 2/Day and Advanced Nutrients multivitamins, Multi-Vitamin Elite, the Vitamin D3 capsules and the Vitamin D liquid drops. The ingredients themselves come from around the world, and Thorne says so.
The softgels are outsourced
Thorne is open about the gap. In its own article on who makes its supplements, it says nearly all products are made on-site, and "for the few wellness solutions not yet made in-house, such as our liquid-filled gel capsules, we research and audit the top manufacturing facilities." It does not say where those facilities are.
That affects the fish oil softgels, such as Omega-3 with CoQ10 and Super EPA. Neither their Thorne pages nor their live listings state an origin. Nothing shows they are made abroad, but nothing confirms a US factory either. For a Summerville-made Thorne product, choose a capsule, tablet or powder.
American-Made Thorne Research Products
View all 13 products →
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Frequently Asked Questions
Is Thorne Research made in the USA?
Partly. Thorne Research makes its core lines in the United States, in Summerville, SC, and some of its products are made elsewhere. Thorne manufactures supplements at their campus in Summerville, South Carolina, providing total control over product ingredients. Every supplement undergoes four rounds of testing. NSF Sport certified facility. Third-party tested for banned substances. Founded in 1984. Uses globally sourced ingredients but all manufacturing and testing done in Summerville, SC. Gold standard for supplement purity in the USA. claim-partial (mild): Checked 2026-10-23. thorne.com/quality: "Our nutritional supplements are manufactured in the United States using globally sourced ingredients at our campus in Summerville, South Carolina." Capsules, tablets and powders (11 of the 14 listings, plus the Vitamin D liquid drops, which are not gel capsules) are consistent with that. Softgels are made by outside partners in unstated locations: nothing shows they are foreign-made, but nothing supports our "Manufactured in USA" descriptions either. The Super EPA and Omega-3 w/ CoQ10 product pages on thorne.com have no origin line, and neither live Amazon listing has an origin field. Severity mild: a few lines outsourced, ingredients sourced globally. https://www.thorne.com/take-5-daily/article/manufactured-by-thorne-why-you-should-know-who-makes-your-supplements "From capsules to powders, nearly all are manufactured on-site at Thorne’s state-of-the-art facility in Summerville, South Carolina. For the few wellness solutions not yet made in-house, such as our liquid-filled gel capsules, we research and audit the top manufacturing facilities that meet our rigorous specifications."
Where is Thorne Research made?
Thorne Research is made in Summerville, SC. The company is headquartered in Summerville, SC.
Which Thorne Research products are made in the USA?
The site lists 13 verified American-made Thorne Research products in Health & Personal Care. Each one links to a store that sells it.
Are all Thorne Research products made in the USA?
Not all Thorne Research products are made in the USA. The brand makes or sells some lines outside the United States. Check for a "Made in USA" label on the product itself, or browse the listed Thorne Research products, each of which cleared the 70% American Score.
Where are Thorne supplements made?
Mostly in Summerville, South Carolina. Thorne says its supplements are manufactured in the United States using globally sourced ingredients at its Summerville campus.
Does Thorne make all of its own products?
Nearly all. Thorne says a few products not yet made in-house, such as its liquid-filled gel capsules, come from outside facilities that it researches and audits.
Are Thorne ingredients from the USA?
Not necessarily. Thorne says its supplements are made using globally sourced ingredients.