Is Life Extension 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.
Life Extension Magnesium Glycinate is not on the NSF Certified for Sport, USP Verified, Informed Sport or Informed Choice list (all checked Oct 13, 2026). Life Extension says its products are tested and that a certificate of analysis is available on request. No public certificate for this product was found. This page links no Life Extension listing.
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 was checked
- NSF Certified for Sport: no Life Extension product on the NSF Certified for Sport list (2,570 listings, NSF list).
- USP Verified: no Life Extension product on the USP Verified list (USP list).
- Informed Sport and Informed Choice: a search for Life Extension on Informed Sport and on Informed Choice returned no results.
- The maker's page: The product page says that raw materials and finished products are tested for heavy metals, microbes, disintegration, potency and quantity of active ingredients, and that a finished-product certificate of analysis (COA) is available on request. No COA is published on the page. (Life Extension product page).
- The product: Life Extension Magnesium Glycinate, 90 vegetarian capsules (item 02535); label 1 capsule: 105 mg magnesium as magnesium glycinate; Amazon ASIN B0DMTV24LR, read Oct 13, 2026.
What this does not mean
Not being on these lists is not a finding that the product is untested or that a lot failed. A certificate of analysis from the maker is the maker's own record, not a third-party listing. It means only that no public third-party listing exists to compare.
Magnesium glycinate products on a certification list
- Nature Made High Absorption Magnesium Glycinate 200 mg, 180 capsules: USP Verified
- Thorne Magnesium Bisglycinate powder, unflavored, 7.98 oz (226.2 g), about 60 servings: NSF Certified for Sport
Side by side: the best third-party-tested magnesium glycinate.
This page restates published certification listings and labels with attribution. It makes no health, benefit or treatment claim, gives no dosing advice, and says nothing about whether any product is safe or right for you.
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