Products · Vitamins & minerals · Momentous
Momentous Magnesium Bisglycinate
Reader ratings
A magnesium bisglycinate capsule (200 mg per two) listed in NSF’s Certified for Sport database, with batch certificates online. It costs about two thirds of Thorne’s powder per serving. As a new product it has only two certificates posted.
Best for People who want a glycinate-type magnesium with both a certifier listing and readable lab results, at a lower price than most tested options.
- Our quality rating
- Good (4 of 5)
- Price range
- Budget
- Verified marks
- NSF Certified for Sport
- Size
- 60 vegan capsules (30 servings of 2 capsules)
approx. $17 for 60 capsules
See it on Momentous’s site →We are not affiliated with Momentous. This link goes to the maker’s own page, with no tracking code. How we're funded.
Reader ratings & reviews
– out of 5
Loading ratings…
Rating breakdown
- 5 stars 0
- 4 stars 0
- 3 stars 0
- 2 stars 0
- 1 star 0
Have this product? Please rate it.
Check your email
We sent a sign-in link to . Click it and you’ll come straight back here, signed in. It expires in 15 minutes; check your spam folder if it doesn’t show up. Thank you for helping the community!
Your review
Reviews are personal experiences, not research, and they never change our quality ratings. Every review is read by our team before it appears.
How we evaluated it
Why we chose it What put it on our list
- NSF’s Certified for Sport database lists “Magnesium Bisglycinate” from Momentous: capsule, 60 count, serving size 2 capsules. The listing shows its lot field as “All”.
- Momentous posts certificates of analysis. We opened the one for lot 0136D6 (made 04/2026): magnesium measured 231.1 mg per two capsules against 200 mg on the label, arsenic 0.002, lead 0.010 and cadmium and mercury under 0.001 µg a day, no gluten above 20 ppm, and no Salmonella, E. coli or Staph. aureus.
- The form is magnesium bisglycinate, which our guide to the types of magnesium describes as well absorbed and the gentlest on the stomach. The label gives the elemental amount: 100 mg per capsule, 200 mg per serving.
- At $16.99 for 30 servings it costs about $0.57 a serving. That is roughly two thirds of the per-serving price of our Thorne magnesium bisglycinate powder ($0.87, same 200 mg).
Trade-offs What to weigh before you buy
- Two capsules a serving means a 60-capsule bottle lasts 30 days, and 200 mg is more than half of the 350 mg upper limit for supplemental magnesium. Count magnesium from other supplements, and ask a clinician first if you have kidney disease or take medicines that interact with it.
- The certificate we read shows 115% of the label amount. That is a normal margin for a mineral, but it means a serving can hold a little over 200 mg.
- Momentous’s certificate page lists only two batches for this product so far (0136D6 and 0136D6A), because it is recent. Momentous says every batch is tested; check that the lot on your bottle appears on that page.
- Our guides on why magnesium matters and sleep and stress cover what the research does and does not show for supplementing.
What to know Details worth knowing first
Magnesium comes in many forms. Our guide to the types explains why glycinate-type forms are often chosen for sleep and for sensitive stomachs. Momentous sells magnesium bisglycinate as a capsule: 100 mg of magnesium each, two a serving.
It is on the list for the paper trail. NSF lists the product in its Certified for Sport database, and Momentous publishes batch certificates. The one we read gave the magnesium amount and heavy-metal results in plain numbers, which is what a lab certificate is for. Our other magnesium pick, Thorne’s powder, has the NSF listing but no certificate, and costs more per serving.
Keep the dose in mind: two capsules is 200 mg, and the upper limit for supplemental magnesium is 350 mg a day. Check the lot on your bottle against the certificate page, and see how to tell if a supplement is pure for what these records can and cannot show.
Quality & testing How it measures up against our checklist
- Third-party tested
- Yes
- Tested by
- NSF (Certified for Sport)
- Label accuracy
- Momentous’s certificate for one lot shows 231.1 mg against 200 mg on the label
- Certificate of analysis
- Yes
| What we checked | What we found |
|---|---|
| Third-party tested Verified | Listed in NSF’s Certified for Sport database as “Magnesium Bisglycinate”, Momentous: capsule, 60 count, serving size 2 capsules, lot field “All”. The listing shows no certification date or status. |
| A certificate of analysis Maker’s claim | Certificate for lot 0136D6 (made 27 April 2026) opened: magnesium 231.1 mg per two capsules against 200 mg claimed (specification 200 to 300 mg); arsenic 0.002, lead 0.010, cadmium and mercury under 0.001 µg a day; gluten under 20 ppm; plate count, yeast, mold, Salmonella, E. coli and Staph. aureus within limits. It is Momentous’s own document: it lists its test methods and names Light Labs for the heavy-metal method, but it is not that lab’s report. |
| The right form Maker’s claim | Magnesium as magnesium bisglycinate, 200 mg elemental per two capsules. Momentous’s certificate for lot 0136D6 shows the same form and 231.1 mg. |
| A plain label Maker’s claim | One active ingredient with an elemental amount. Momentous says there are no proprietary blends. |
| Disclosed extras Maker’s claim | Other ingredients: hypromellose (capsule), silica, magnesium stearate, microcrystalline cellulose. The page also says no added sugar and no artificial colors. |
| Dose against the upper limit Maker’s claim | 200 mg per serving (231 mg on Momentous’s certificate for the lot we read) against a 350 mg upper limit for supplemental magnesium. |
What the labels mean
- Verified We opened an independent record that confirms it: a certifier’s listing, a regulator’s list or a lab report. It is linked under Sources.
- Maker’s claim The maker says so on its own page or label. We read it but found no independent record.
- Not verified We looked and could not confirm it, or the maker does not say. Treat it as unknown.
Sources Where our facts come from
- Momentous Magnesium Bisglycinate product page. Maker’s page. Open ↗
- NSF Certified for Sport listing: Momentous Magnesium Bisglycinate. Certifier or regulator listing. NSF also lists Momentous Magnesium Malate and Magnesium Threonate as separate products. Open ↗
- Momentous certificate of analysis, magnesium bisglycinate 200 mg, lot 0136D6. Maker’s page. Published by Momentous. Magnesium, heavy-metal, gluten and microbial results; names Light Labs for the heavy metals. Open ↗
Alternatives Other options to compare
- Thorne Magnesium Bisglycinate (powder) NSF listing but no public batch certificate; about $52 for 60 servings of 200 mg.
- Pillar Triple Magnesium tablets Three forms and 310 mg per serving (two tablets), sold in the US by Pillar; about $39 for 30 servings. Informed Sport’s October 2026 list names “Triple Magnesium - Professional Recovery”, but we could not see which pack or lots it covers.