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.
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. Programs we did not search are named below as not checked.
The testing claim we recorded for this product, with where it appeared: "THIRD PARTY TESTED" (a bullet on the side of the label, naming no program and no laboratory). With no program named there is no listing to open against it, so 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. This site's capture of the Certified for Sport directory, taken from NSF's public search results on Sep 23, 2026, keeps every listing filed under a brand this site prices and holds no row under Nutricost; the whole-directory read of Sep 21, 2026 found the name nowhere either. The eight listings in the capture whose product names carry "vitamin c" or "ascorb" belong to Nordic Naturals, OIAM, OIAM Performance, Core Med Science, KREO and Vital Proteins. The label on this package prints no NSF mark. Absence from a database is not a failed test. NSF's whole directory was read again on Oct 17, 2026, 2,581 listings, and still holds no vitamin C listing under this brand.
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.
Nutricost 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.
Nutricost 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.
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
powder
Serving size
1 scoop
Active ingredient
Vitamin C: 90mg as labeled
Printed on this tub's own panel as "Vitamin C 90mg 100%" in a "Serving Size: 1 Scoop (0.5g)" serving, with "Servings Per Container: 454". The comparison basis is milligrams of vitamin C and the panel prints milligrams, so nothing is converted. The panel names no form on its Vitamin C line. It also prints "Acerola Cherry Extract (Malpighia glabra)(fruit) 500mg" beside "Other ingredients: None."; the package is sold as natural vitamin C from acerola cherry, so the extract line is not marked as a second active. The front face prints "NET WT. 8.1 OZ (227 G)". The side of the label prints a "GLUTEN-FREE" bullet. No face states vegan or vegetarian, so both stay Unknown.
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.
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.