DeliveredDose

MegaFood Extra Strength Magnesium Glycinate (120 capsules)

D · None located
$17.99 at MegaFood (direct) · $0.343 per 200mg
Delivery extra; amount not published
Second active this price does not pay for: BioPerine black pepper fruit extract (95% piperine) (Piper nigrum) 5 mg.
Buy at MegaFood (direct)

Label read Oct 20, 2026. Where the data comes from

Is MegaFood third party tested? · Which magnesium brands are third-party tested?

Cost

$0.343
per 200mg elemental magnesium
$17.99
per container · MegaFood (direct)
$10.28
a month at one dose a day

Second active this price does not pay for: BioPerine black pepper fruit extract (95% piperine) (Piper nigrum) 5 mg. The price per dose counts elemental magnesium only.

Amount per serving
350mg 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 350mg, exactly that level on its own. This level is for elemental magnesium only; the panel also prints BioPerine black pepper fruit extract (95% piperine) (Piper nigrum) 5 mg, which it does not cover.
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.
Servings per container
30
Units needed per dose
2.29 capsules
Doses per container
52.5
Cost per serving
$0.60
In whole units
3 capsules = 263mg for $0.45
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 2.29 capsules, and capsules cannot be split. The smallest whole number that holds at least the 200 mg comparison dose is 3 capsules, which hold 263 mg.
  • Elemental magnesium as printed on this package's own Supplement Facts panel image ("Servings per container 30"): "Magnesium (as 3,000 mg magnesium glycinate) 350 mg 83%" per 4-capsule serving. The 3,000 mg beside it is the compound weight, recorded separately and never used to derive the elemental figure. The panel names one salt and no second salt. 30 servings of four capsules is the "120 CAPSULES | 30 SERVINGS" the bottle front prints. The panel's second line is "BioPerine® black pepper fruit extract (95% piperine) (Piper nigrum) 5 mg". It is named on this package's row as a second active; the price per dose pays for the 350 mg of magnesium alone, and the marking changes no ranking. The label's VEGETARIAN and GLUTEN FREE seals are what those two answers rest on.

Delivery

Delivery cost
Applies, amount not published
Delivery is NOT free on this order. It is $32.01 below the $50.00 threshold, and this retailer does not publish a rate, so we cannot tell you what it will add. Free shipping on orders over $50 within the US, from MegaFood's own shipping policy page, first read September 1, 2026: "Q: How much does shipping cost? A: All orders over $50 ship free", with a site-wide banner saying the same. The page read the same on September 28, 2026. No rate is published for orders below $50, so delivered cost under the threshold is Unknown.
Cost per dose delivered
at least $0.343
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.
To get free delivery
Spend $32.01 more at MegaFood (direct)
Delivery policy: MegaFood (direct), MegaFood (direct) delivery terms, re-read September 28, 2026 · checked Sep 28, 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
$17.99
Delivery
Unknown
At least, before delivery & tax
$17.99
Per 200mg elemental magnesium, before delivery
$0.343

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 27, 2026.
View this package at MegaFood (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 policy: MegaFood (direct), MegaFood (direct) delivery terms, re-read September 28, 2026 · checked Sep 28, 2026
Delivery terms and limits

Free shipping on orders over $50 within the US, from MegaFood's own shipping policy page, first read September 1, 2026: "Q: How much does shipping cost? A: All orders over $50 ship free", with a site-wide banner saying the same. The page read the same on September 28, 2026. No rate is published for orders below $50, so delivered cost under the threshold is Unknown.

Where to buy

MegaFood (direct) · lowest recorded available price
we earn nothing on this link
checked today
$17.99Buy

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: $17.99 at MegaFood (direct), checked . Unchanged since we started checking on Oct 20 (8 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 D: Could not locate independent data

We could not locate independent testing or certification for this product. That is a statement about our search, not about the product. These programs certify what a company submits to them, so a product can be absent simply because it was never entered, which is not a finding against it. Which certifier databases we searched, and when, is listed below. Where a program is not listed there, we have not checked it and do not imply anything either way.

  • Searched 4 certifier databases and found no listing for this product, and located no published test results. A program not named below was not checked for this product.
  • The testing claim we recorded for this product, with where it appeared: "TESTED FOR 150+ PESTICIDES" (seal printed beside the Supplement Facts panel image, naming no program). It names no program this site grades, so there is no listing to open against it, and it does not raise the verification level.
  • Checked NSF Certified for Sport database on Oct 17, 2026: not listed.
  • Checked USP Verified database on Sep 21, 2026: not listed.
NSF Certified for Sport: checked, not listed
Checked and absent. NSF's whole Certified for Sport directory was read on Oct 17, 2026, 2,581 listings, and holds one MegaFood row, 1730628, its Micronized Creatine Monohydrate Unflavored Powder, and no magnesium row. The label on this package prints no NSF mark. Absence from a database is not a failed test.
Source: NSF Certified for Sport, NSF Certified for Sport directory, full read, October 17, 2026 · checked Oct 17, 2026
USP Verified: checked, not listed
Checked and absent. USP's own Verified Products directory was read page by page in a browser on Sep 21, 2026: 16 pages, 159 products, 16 brands, captured in this site's directory snapshot. This brand does not appear in the directory or in its brand facet, and no product in it names this brand. USP verifies the products a company submits to it, so this records which products were submitted and nothing else. Absence from a database is not a failed test.
Source: USP, USP Verified Products directory, full read, September 21, 2026 · checked Sep 21, 2026
Informed Sport: checked, not listed
MegaFood does not appear as a brand in LGC's own Informed Sport product list of October 2026, 497 brands and 1,887 product lines, as read on Oct 3, 2026. Absence from a list is not a failed test: Informed Sport certifies the products a company submits, so this records only that none from this brand is in the program's published list on that date.
Source: LGC (Informed Sport), Informed Sport product list, October 2026 PDF, as read October 3, 2026 · checked Oct 3, 2026
Informed Choice: checked, not listed
MegaFood does not appear as a brand in LGC's own Informed Choice product list of October 2026, 201 brands and 853 product lines, as read on Oct 3, 2026. Absence from a list is not a failed test: Informed Choice certifies the products a company submits, so this records only that none from this brand is in the program's published list on that date.
Source: LGC (Informed Choice), Informed Choice product list, October 2026 PDF, as read October 3, 2026 · checked Oct 3, 2026

No laboratory report with figures is recorded here 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 we found no published result for that testing.

Label

Form
capsule
Serving size
4 capsules
Active ingredient
Magnesium Glycinate: 350mg as labeled
Elemental magnesium as printed on this package's own Supplement Facts panel image ("Servings per container 30"): "Magnesium (as 3,000 mg magnesium glycinate) 350 mg 83%" per 4-capsule serving. The 3,000 mg beside it is the compound weight, recorded separately and never used to derive the elemental figure. The panel names one salt and no second salt. 30 servings of four capsules is the "120 CAPSULES | 30 SERVINGS" the bottle front prints. The panel's second line is "BioPerine® black pepper fruit extract (95% piperine) (Piper nigrum) 5 mg". It is named on this package's row as a second active; the price per dose pays for the 350 mg of magnesium alone, and the marking changes no ranking. The label's VEGETARIAN and GLUTEN FREE seals are what those two answers rest on.
Second active
BioPerine black pepper fruit extract (95% piperine) (Piper nigrum) 5 mg
Printed on the panel, and not counted in the price per dose.
Vegan
Unknown
Gluten free
Yes
Allergens
Unknown
Other ingredients
Hypromellose (capsule), Microcrystalline cellulose, Silicon dioxide, Stearic acid
Label facts rest on: MegaFood, Supplement Facts panel and bottle front: MegaFood Extra Strength Magnesium Glycinate Capsules, 120 capsules · checked Oct 20, 2026

Other tracked packages

Same category and format and, where a category is compared by strength, 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 all the magnesium glycinate 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.