Certified magnesium products compared
A certification is not a sleep study. 10 brands had a magnesium product on a public list on 15 October 2026. Where the list included a glycinate, bisglycinate, or citrate, that name is the example. Combination calcium tablets are included only when magnesium is in the product name that appeared on the list. The seal covers that product, not every magnesium the brand sells.
Which salt to take is magnesium glycinate vs citrate and best magnesium for sleep. This page does not repeat that choice. It lists products whose names we saw on a certifier page. Magnesium glycinate and magnesium citrate are the ingredient pages.
The list
Kirkland Signature magnesium citrate softgels were on the USP Verified directory. Thorne, Momentous, Designs for Sport, Klean Athlete, Bulk Supplements, and others had magnesium names on NSF Certified for Sport. Kaged and a few Informed-Sport brands had a magnesium name on that list. None of this is an affiliate offer.
| Brand | Example on the list | Program | Rest of the list |
|---|---|---|---|
| GNC | GNC Pro Performance P.M. Zinc Magnesium | Informed Choice | Only this match on the brand page |
| Nature Made | Nature Made Calcium Magnesium with Zinc | Informed Choice | 1 other named product on the brand page |
| Kaged | Magnesium Glycinate + Malate | Informed Sport | Only this match on the brand page |
| Musashi | Musashi MAGNESIUM MUSCLE RECOVERY | Informed Sport | Only this match on the brand page |
| Bulk Supplements | MAGNESIUM CITRATE | NSF Certified for Sport | 1 other named product on the brand page |
| Designs for Sport | Magnesium Bisglycinate | NSF Certified for Sport | 1 other named product on the brand page |
| Klean Athlete | Klean Magnesium | NSF Certified for Sport | Only this match on the brand page |
| Momentous | Magnesium Bisglycinate | NSF Certified for Sport | 2 other named products on the brand page |
| Thorne | Thorne® Magnesium Bisglycinate | NSF Certified for Sport | Only this match on the brand page |
| Kirkland Signature | Kirkland Signature Magnesium Citrate 250 mg Softgels | USP Verified | 1 other named product on the brand page |
Elemental magnesium, not the salt weight, is the dose. The supplemental upper limit for adults is 350 mg a day of elemental magnesium from supplements unless a clinician says otherwise.