Vitamin B12 questions
5 questions about vitamin B12, each answered from the 23 products we track, priced per 1,000 mcg 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 B12 product.
Methylcobalamin vs cyanocobalamin: what is the price difference?
What each form of vitamin B12 costs per 1,000 mcg at the same labeled strength, with what the Supplement Facts panels say. Absorption is not compared.
Which vitamin B12 brands are third-party tested?
Every vitamin B12 we price, grouped by whether a certifier names the exact bottle sold, another size, or nothing we found. Absence is not a verdict.
What is the cheapest vitamin B12?
Every vitamin B12 we track, both forms, priced per 1,000 mcg from its own label and ranked within each labeled strength, with which bottles a certifier names.
Is Nature Made vitamin B12 USP Verified?
Nature Made vitamin B12, every strength and count we price, checked against USP’s Verified directory and the USP Verified Mark on each label.
Is Thorne vitamin B12 NSF certified?
Thorne Vitamin B12 checked against NSF Certified for Sport bottle by bottle: which counts the listing names, with the listing ID.
Questions that span every supplement
Do third-party tested supplements cost more?
The cheapest product we track in each category beside the cheapest one a certifier names at the exact package, where one exists, and the gap per dose.
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.
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 re-read every price we can read automatically each day and keep every reading. 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 price, and what that does to the count on the front of the bottle.
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 and its own label: which packages carry both, product by product.
Questions about something else: Creatine Monohydrate · Magnesium · Vitamin D3 · Omega-3 · Whey Protein · Plant Protein · Collagen Peptides · 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.