Is Thorne magnesium NSF certified?
Our pick for each type, each format ranked separately: Glycinate, capsules, softgels and tablets: Nature Made High Absorption Magnesium Glycinate 200 mg (60 capsules) (NSF Certified for Sport does not list this package; it qualifies because USP Verified lists it); Glycinate, powders: Thorne Magnesium Bisglycinate (60 servings); Glycinate, gummies and chewables: Nature Made High Absorption Magnesium Glycinate Gummies 100 mg (40 gummies) (NSF Certified for Sport does not list this package; it qualifies because USP Verified lists it); Citrate, capsules, softgels and tablets: Nature Made High Absorption Magnesium Citrate 250 mg (120 softgels) (NSF Certified for Sport does not list this package; it qualifies because USP Verified lists it); Citrate, powders: BulkSupplements.com Magnesium Citrate Powder (1 kg) (before delivery); Citrate, gummies and chewables: Nature Made High Absorption Magnesium Citrate Gummies 200 mg (60 gummies) (NSF Certified for Sport does not list this package; it qualifies because USP Verified lists it); L-Threonate: Momentous Magnesium L-Threonate (90 capsules) (before delivery). Types with no certified product are listed below. Where to buy
Partly: 2 of the 5 Thorne magnesium packages we track, not all of them. NSF lists a specific package against each certificate, and a certificate is what NSF actually stands behind, so a package the listing does not name is treated as unconfirmed rather than certified. Every row below was read against NSF's own listing, and the listing ID is shown.
NSF names the magnesium bisglycinate tub and its stick packs. The magnesium glycinate capsules and the citrate powder have no listing.
| Product | Package | Named by an NSF listing? | Certificate |
|---|---|---|---|
| Magnesium Bisglycinate (60 servings) buy | 60 servings | Yes | 1507934 |
| Magnesium Glycinate (90 capsules) buy | 90 capsules | No listing found | None found |
| Magnesium Glycinate (180 capsules) buy | 180 capsules | No listing found | None found |
| Magnesium Bisglycinate, Travel Packs (30 stick packs) buy | 30 stick packs | Yes | 1666128 |
| Magnesium Citrate, Citrus Berry (60 servings) buy | 60 servings | No listing found | None found |
What the listings say
The records here rest on 2 Certified for Sport listings (1507934, 1666128). NSF records some brands under more than one spelling, so a search on the brand name alone can miss a listing; ours are found from a full read of the directory, then opened one by one.
3 products here have no NSF Certified for Sport listing. That is an absence in a database, not a failed test: these programs certify what a company submits to them, and NSF Certified for Sport is one program among several. One of their labels prints NSF's Contents Certified mark, which belongs to a different NSF program, one this page does not read.
What each product page shows
Every Thorne product we track, across all categories: Is Thorne third party tested?
Where to buy: the pick for each type
The pick is the cheapest certified product, at the exact package sold where the certifier names packages, with no adverse finding on record, a price its retailer let us read recently, and no more than a year’s supply at the label’s serving; per delivered dose where the retailer publishes a delivery rate. Where none does, it is the cheapest such product before delivery, and it says how far the order is from free delivery. It is the same pick the category page shows.
How these lines are chosen
Among 24 products and 24 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
How these lines are chosen
Among 9 products and 9 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
How these lines are chosen
Among 3 products and 3 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
How these lines are chosen
Among 10 products and 10 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
How these lines are chosen
Among 7 products and 7 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below. No product here that clears every other bar publishes a delivery rate below its free-delivery threshold, so the pick is priced before delivery.
How these lines are chosen
Among 3 products and 3 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
A pick has to be independently certified, at the exact package sold where the certifier names packages, with no recall or failed test, a price its retailer let us read recently, and no more than a year’s supply at the label’s serving. Where the retailer publishes no delivery rate, the pick is priced before delivery and says so. Nothing we track here clears all of those yet. This one misses at least one bar, and says which:
A pick has to be independently certified, at the exact package sold where the certifier names packages, with no recall or failed test, a price its retailer let us read recently, and no more than a year’s supply at the label’s serving. Where the retailer publishes no delivery rate, the pick is priced before delivery and says so. Nothing we track here clears all of those yet. This one misses at least one bar, and says which:
A pick has to be independently certified, at the exact package sold where the certifier names packages, with no recall or failed test, a price its retailer let us read recently, and no more than a year’s supply at the label’s serving. Where the retailer publishes no delivery rate, the pick is priced before delivery and says so. Nothing we track here clears all of those yet. This one misses at least one bar, and says which:
A pick has to be independently certified, at the exact package sold where the certifier names packages, with no recall or failed test, a price its retailer let us read recently, and no more than a year’s supply at the label’s serving. Where the retailer publishes no delivery rate, the pick is priced before delivery and says so. Nothing we track here clears all of those yet. This one misses at least one bar, and says which:
How these lines are chosen
Among 7 products and 7 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below. No product here that clears every other bar publishes a delivery rate below its free-delivery threshold, so the pick is priced before delivery.
A pick has to be independently certified, at the exact package sold where the certifier names packages, with no recall or failed test, a price its retailer let us read recently, and no more than a year’s supply at the label’s serving. Where the retailer publishes no delivery rate, the pick is priced before delivery and says so. Nothing we track here clears all of those yet. This one misses at least one bar, and says which:
A pick has to be independently certified, at the exact package sold where the certifier names packages, with no recall or failed test, a price its retailer let us read recently, and no more than a year’s supply at the label’s serving. Where the retailer publishes no delivery rate, the pick is priced before delivery and says so. Nothing we track here clears all of those yet. This one misses at least one bar, and says which:
Full comparison of every product in this category: Magnesium. Every question we answer: the question index.
What this rests on: prices we last recorded at the retailer named on each product page, which go stale, and each page says when it was checked; the products we track, not every product sold, and Amazon and Walmart are not among the stores; listings and labels read at the source, each linked from the page. Found an error? Tell us. The full method: How we compare.