Is Thorne magnesium glycinate third-party tested?
Last reviewed 2026-10-13. Every certification listing, label and Amazon seller below was read from its source on that date, and each links it. No price is shown.
Yes. Thorne Magnesium Bisglycinate powder, unflavored, 7.98 oz (226.2 g), about 60 servings is on the NSF Certified for Sport list (NSF listing 1507934, checked Oct 13, 2026). The listing names 21 lot numbers: the lot number is printed on the container.
What this page does not say. It states certification listings and label facts only. It says nothing about what magnesium does or about any effect of a product, and it gives no dose advice.
What the listing shows
NSF lists Thorne Magnesium Bisglycinate, powder, unflavored, package size 7.98 oz (226.2 g), serving 1 scoop (3.77 g), country of sale United States, with 21 lot numbers.
The label
1 scoop (3.77 g): 200 mg magnesium as magnesium bisglycinate. Other ingredients: citric acid, monk fruit extract. About 60 servings. Source: NSF label image for listing 1507934.
Thorne magnesium glycinate capsules
The NSF list has no Thorne magnesium capsule. NSF lists Thorne Magnesium Bisglycinate as powder (listings 1507934 and 1205063) and as stick packs (1666128) only. These capsules are not linked. Amazon ASINs B0F5XYHRPV, B0FRC49BB7, read Oct 13, 2026.
The exact product on Amazon
The Amazon listing is the 7.98 oz size, 60 servings, and names NSF Certified for Sport. NSF lists that package size (7.98 oz, 226.2 g) as listing 1507934.
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THORNE Magnesium Bisglycinate, Powdered Magnesium Formula, 60 Servings (ASIN B0797HBLL3; Sold by Pattern., shipped by Amazon (Pattern. is a marketplace seller, not Thorne and not Amazon.com. It is the agency that runs Thorne's Amazon store.); read Oct 13, 2026): See it on Amazon →
No price is shown: prices change, and the price at the store is the one to check.
All magnesium glycinate products on a certification list: the best third-party-tested magnesium glycinate.
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