Ordered by price, lowest first, and labeled so you can see what each link earns us. Commission is never an input to that ordering. No link on this page earns us anything. Every Buy button is a plain retailer link.
Verification level 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. The databases we searched, and when, are listed below. If a program is not listed, we did not check it, and we make no claim about it 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.
Testing claim we recorded, and where it appeared: "THIRD PARTY TESTED" (a seal beside the panel and a bullet on the side of the label, naming no program and no laboratory). The claim names no program we grade, so there is no listing to check it against. 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. We read all 16 pages of USP's own Verified Products directory in a browser on Sep 21, 2026: 159 products from 16 brands. We saved a copy. This brand is not in it: not in the directory's brand filter, and not in any product name. USP verifies the products a company submits to it, so this shows only which products were submitted. Not being listed is not a failed test.
Nutricost is not on the October 2026 Informed Sport product list, which we read on Oct 3, 2026. The list, published by LGC, has 497 brands and 1,887 product lines. Not being listed is not a failed test. Informed Sport certifies what a company submits, so this means only that no product from this brand was on the published list that day.
Nutricost is not on the October 2026 Informed Choice product list, which we read on Oct 3, 2026. The list, published by LGC, has 201 brands and 853 product lines. Not being listed is not a failed test. Informed Choice certifies what a company submits, so this means only that no product from this brand was on the published list that day.
No laboratory report with figures is recorded here for this product.
Not established: Heavy-metal testing, Label-accuracy testing.
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
1 capsule
Active ingredient
Vitamin C: 1,000mg as labeled
Printed on this bottle's own panel as "Vitamin C (as ascorbic acid) 1,000mg 1,111%" in a "Serving Size: 1 Capsule" serving, with "Servings Per Container: 30". We compare milligrams of vitamin C, and the label prints milligrams, so nothing is converted. The panel also prints "Rose Hip Powder (Rosa canina)(fruit) 25mg", a second active with its own amount, which the price per dose does not count. The other ingredients begin "Gelatin capsule", so the package is neither vegan nor vegetarian. The side of the label prints a "GLUTEN-FREE" bullet.
Second active
rose hip powder 25 mg
Printed on the panel, and not counted in the price per dose.
Packages in the same category and format, with the same ingredients. Where we recorded the ingredient forms from the label, only packages with the same forms are shown. Where a category is compared by strength, they also have the same labeled strength. Only current prices are shown, cheapest container first. Prices are before delivery. Formulas, flavors and allergens may differ: check each label. These are browsing options, not recommended substitutes.
What this rests on: Prices are the last ones we recorded at the retailer named on each product page. Prices go stale, so each page says when it was checked. We track some products, not every one sold, and Amazon and Walmart are not among our stores. Listings and labels are read at the source, and each page links to them. Found an error? Tell us. The full method: How we compare.