Vitamin C questions
4 questions about vitamin C, each answered from the 82 products we track, priced per 1,000 mg where a price is on record, and from the certifier listings behind them, recomputed on every build. Where the answer is “we do not know”, it says so. See every vitamin C product.
How much does vitamin C cost?
What 1,000 mg of vitamin C costs from each label, one format at a time: the lowest, middle and highest price in each, and how many packages. Before delivery.
What is the cheapest vitamin C?
Every vitamin C we price, ranked by what 1,000 mg costs as its label prints it and only against the same format, with which packages a certifier confirms.
Which vitamin C brands are third-party tested?
Every vitamin C we price, grouped by whether a certifier confirms the exact package sold, lists it without confirming it, or lists nothing we found.
Is Nature Made vitamin C USP Verified?
Nature Made vitamin C, every strength and form we price, checked against USP’s Verified directory and the USP Verified Mark on each bottle’s label.
Questions that span every supplement
Do third-party tested supplements cost more?
Per category, the cheapest product we track beside the cheapest a certifier names at the exact package, if any, within one format and, where it matters, one strength.
Is BulkSupplements third party tested?
Every BulkSupplements product we track, by whether a certifier names the exact package sold, only another size, or nothing we found. With listing IDs.
Do supplement travel packs cost more per dose?
Every travel pack or single-serve packet we price, next to the same brand’s smallest tub or bottle of the same product, per comparison dose.
Is Thorne third party tested?
Every Thorne product we price, checked in NSF’s Certified for Sport database: which listing names the exact package sold, with the listing IDs.
Is Core Med Science third party tested?
Every Core Med Science product we price, checked in NSF’s Certified for Sport database: which listing names the exact package sold, and the IDs.
Is Optimum Nutrition third party tested?
Every Optimum Nutrition product we track, checked in the certifier databases: what each listing covers, package by package, with the listing IDs.
Is Momentous third party tested?
Every Momentous product we price, checked in NSF’s Certified for Sport database: where a listing names the exact package, and where it names another size.
Is BPN third party tested?
Every Bare Performance Nutrition product we price, checked in NSF’s Certified for Sport database: which package each listing names, and which it does not.
Which supplements are NSF Certified for Sport?
Every package we price that NSF names in its Certified for Sport database, by category, with the listing IDs and what each listing actually covers.
Do supplement prices actually change?
We keep every price reading we take: daily where a store can be read automatically, less often where it is read by hand. Which prices have moved since we started, which have not, and by how much.
How many capsules is one serving?
How many pills the label calls one serving, across every capsule, tablet and softgel we have a price for, and what that does to the count on the front of the bottle.
Is MegaFood third party tested?
Every MegaFood product we price, checked in the NSF, USP and Informed databases: which listing names the exact package sold, and which we found no listing for.
Is Evogen Nutrition third party tested?
Every Evogen Nutrition product we price, checked in NSF’s Certified for Sport database and others: which listing names the exact package sold, with the listing IDs.
Is BUBS Naturals third party tested?
Every BUBS Naturals product we price, checked in NSF’s Certified for Sport database: which listing names the exact package sold, with the listing IDs.
Is Sports Research third party tested?
Every Sports Research product we track, checked in the certifier databases: which program lists each one, and which no database we searched lists.
Is Nature Made third party tested?
Every Nature Made product we price, checked against USP’s Verified Products directory, NSF’s Certified for Sport database and its own label, product by product.
Questions about something else: Creatine Monohydrate · Magnesium · Vitamin D3 · Omega-3 · Whey Protein · Plant Protein · Collagen Peptides · Vitamin B12 · Zinc. Or every question on one page.
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.