$39.99 per container, before delivery
$1.85 per 200mg elemental magnesium, before delivery
Delivery extra; amount unknown
Price checked Oct 16, 2026.
Buy at MegaFood (direct) →Label, prices & sources →Momentous Magnesium L-Threonate (90 capsules)
A · NSF Certified for Sport
Label read Aug 31, 2026. Where the data comes from
Is Momentous third party tested? · Is Momentous magnesium NSF certified? · Which magnesium brands are third-party tested?
Cost
$2.30
per 200mg elemental magnesium
$49.99
per container · Momentous (direct)
$68.95
a month at one dose a day
Amount per serving
145mg elemental magnesium
Upper intake level
Adults, 350mg a day, from supplements and medications; magnesium in food does not count toward it. One serving of this product holds 145mg, less than that level on its own.
An upper intake level is the largest daily intake unlikely to cause harm for most people. It is not a limit on treatment. Higher amounts are sometimes used, but only under the direction and supervision of a health care provider. It is not a recommendation about what to take.
Source: NIH Office of Dietary Supplements, Magnesium fact sheet for health professionals: the upper intake level, read October 8, 2026 · checked Oct 8, 2026
Definition: NIH Office of Dietary Supplements, Dictionary of dietary supplement terms: what an upper intake level is, read October 8, 2026 · checked Oct 8, 2026
Servings per container
30
Units needed per dose
4.14 capsules
Doses per container
21.8
Cost per serving
$1.67
In whole units
5 capsules = 242mg for $2.78
This is the smallest whole number of capsules that holds at least one comparison dose. It is shown as a caveat and is deliberately not used in ranking, because rounding up changes the amount as well as the price.
- One comparison dose is 4.14 capsules, and capsules cannot be split. The smallest whole number that holds at least the 200 mg comparison dose is 5 capsules, which hold 242 mg.
- Elemental magnesium as printed on the Supplement Facts panel. Not derived from the compound weight.
Delivery
Delivery cost
Applies, amount not published
This retailer does not publish a delivery rate, so we cannot estimate it.
Cost per dose delivered
at least $2.30
We will not put a number on this. The product price is a floor, not the price you will pay. Reaching the free-delivery threshold, or choosing a retailer that publishes its rate, is the only way to know in advance.
Delivery policy: Momentous, Momentous shipping policy and cart free-shipping indicator · checked Aug 31, 2026
Buying more than one? Calculate the order
Change the quantity to see the actual container subtotal and whether it reaches the recorded free-delivery threshold.
- Container subtotal
- $49.99
- Delivery
- Unknown
- At least, before delivery & tax
- $49.99
- Per 200mg elemental magnesium, before delivery
- $2.30
30 labeled servings in this order. Comparison doses are a price yardstick, not advice about how much to take.
Delivery is extra; the retailer has not published a rate we can apply.
Unit price checked Oct 16, 2026.
View this package at Momentous (direct) →Set the quantity at the retailer; this calculator does not add items to a cart. Uses the recorded unit price with no coupon or quantity discount. Tax is extra. Delivery terms apply to the contiguous US unless the policy says otherwise.
Delivery terms and limits
Momentous' cart showed "$99.00 away from FREE SHIPPING" on August 31, 2026, but its shipping policy says rates are calculated at checkout "based on your order, delivery address, and any current promotions or offers available to you". The $99 figure depends on promotions and on the customer, so it is not used here as a standing threshold. Delivered cost is Unknown, and Momentous listings are left out of cheapest-delivered claims.
Where to buy
Momentous (direct) · lowest recorded available price
we earn nothing on this link
checked todayPrice source: Momentous, Magnesium L-Threonate (90 capsules) product page · checked Aug 31, 2026
$49.99Buy
Ordered by price, lowest first, and labeled so you can see what each link earns us. Commission is never an input to that ordering. If the cheapest retailer pays us nothing, that is still the one we send you to. No link on this page earns us anything; every Buy button is a plain retailer link.
Price history
Latest recorded price: $49.99 at Momentous (direct), checked . Unchanged since we started checking on Aug 31 (51 checks).
We check each price about once a day, so this is the range we recorded, not necessarily every price there has been. It says what changed, not why, and nothing about where the price goes next.
Verification, Tier A: Independently certified
This exact package is inside the certifier’s own scope: named on an NSF Certified for Sport listing, or, for USP Verified, the product is in USP’s directory and its mark is on this package’s label. Both audit the manufacturing site and both confirm the label’s own claims against the finished product. They are not interchangeable beyond that: NSF Certified for Sport also screens for substances banned in sport, and USP Verified does not. USP instead checks that the product dissolves and releases within a specified time. What each program checks is set out per program below.
- Current listing found: NSF Certified for Sport.
NSF Certified for Sport: currently listed (1496111)
NSF listing 1496111 names a 90-count package at a 3-capsule serving, which is the package priced here. Read directly by Dan on Aug 31, 2026, who confirmed we carry the certified package. Package text read from the listing itself on Sep 20, 2026: Package Size "90", Serving Size "3 capsules". The listing names the package priced here.
What NSF Certified for Sport checks
| Confirms the label’s dose | Yes |
| Tests for heavy metals / contaminants | Yes |
| Screens for substances banned in sport | Yes |
| Reviews manufacturing | On-site audit |
| Testing frequency | Periodic |
From the program's own published description of its process. Source. “Not stated” means the program does not publish a clear answer. It does not mean no.
No test reports located for this product.
Not established: Heavy-metal testing, Label-accuracy testing, Vegan status.
Absence of data is not evidence that a product is clean. It means nobody has published a result we could find.
Label
Form
capsule
Serving size
3 capsules
Active ingredient
Magnesium L-Threonate: 145mg as labeled
Elemental magnesium as printed on the Supplement Facts panel. Not derived from the compound weight.
Vegan
Unknown
Gluten free
Yes
Allergens
Unknown
Other ingredients
Unknown
Label facts rest on: Momentous, Supplement Facts panel, Momentous Magnesium L-Threonate · checked Aug 31, 2026
Other tracked packages
Same category and format and, for vitamin D, the same labeled strength. Different recorded ingredient-form lists are kept separate. Ordered by container price before delivery; only fresh recorded prices are shown. Formulas, flavors and allergens may differ: check each label. These are browsing options, not recommended substitutes.
Compare every magnesium L-threonate we price, per 200mg elemental magnesium →
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.