Vitamin B12 is the one shelf in this category where the number printed on the pack is almost certainly the amount of the actual vitamin. No 50% carrier to correct for, as with alpha-GPC; no extract ratio to unpick, as with mushrooms. What replaces those problems is stranger. The numbers here run from 500 micrograms to 10,000, the adult reference intake is 2.4, and the body's main route for absorbing the stuff stops taking deliveries after a couple of micrograms per dose. Nine labels were read to work out which of those numbers is doing anything.
Panels came from the NIH Dietary Supplement Label Database; prices from each brand's own shopping page. Three brands' sites would not serve a price, which leaves cost unscored for them rather than guessed at.
The five factors, stated before any product appears
- Form, named on the panel. Cyanocobalamin, methylcobalamin, adenosylcobalamin and hydroxocobalamin are different molecules delivering the same vitamin. Every product here names one, which makes this the best-disclosed shelf in the category.
- Amount, against the reference intake. The RDA for adults is 2.4 mcg a day (Institute of Medicine, Dietary Reference Intakes, 1998). Everything here is a multiple of that in the hundreds or thousands. The question is not safety — the same report set no Tolerable Upper Intake Level for B12, for want of evidence of harm — but whether the extra buys anything.
- Route, and what the label claims for it. Capsule, chewable, lozenge, spray, gummy. A label may state the route; a label stating the route is better is making a claim, and this desk checked whether it did.
- What else is in the serving — folate, calcium, sugar, flavourings — and whether the product name accounts for it.
- Cost per day at the printed serving, from the brand's own price and count.
What this page does not carry: customer ratings, and no statement about who is short of anything. Blood levels are a blood-test question; a ranking page can only say what is in the bottles. The overall figure is a weighted judgement rather than the average of the five.
How the field compares
| Product | Per serving | Form | Route | Price / count | Per day |
|---|---|---|---|---|---|
| Weal Focus | 500 mcg | Methylcobalamin | Capsule | $39.99 / 60 | $1.33 |
| Nutricost Vitamin B12 2,000 mcg | 2,000 mcg | Methylcobalamin | Capsule | $11.97 / 240 | $0.05 |
| Jarrow Methyl B-12 500 mcg Cherry | 500 mcg | Methylcobalamin | Chewable | $19.98 / 2 × 100 | $0.10 |
| Country Life B12 with Folate 500 mcg | 500 mcg + folate 667 mcg DFE | Cyanocobalamin | Lozenge | $13.49 / 100 | $0.13 |
| Pure Encapsulations B12 Folate | 800 mcg + folate 1,333 mcg DFE | Methylcobalamin | Capsule | Not published on the brand site | Not scored |
| NOW Methyl B-12 5,000 mcg | 5,000 mcg | Methylcobalamin | Capsule | Not published on the brand site | Not scored |
| Nature Made Maximum Strength B12 | 5,000 mcg | Cyanocobalamin | Softgel | $21.99 / 60 | $0.37 |
| Garden of Life mykind Organics B-12 Spray | 500 mcg | Methylcobalamin, from yeast | Oral spray | Not published on the brand site | Not scored |
| Nature Made Energy B12 Adult Gummies | 1,000 mcg | Cyanocobalamin | Two gummies | $10.79 / 80 | $0.27 |
Panels from the NIH Dietary Supplement Label Database, read August 2026: Nutricost 306402 · Jarrow 307652 · Country Life 333221 · Pure Encapsulations 184302 · NOW 245891 · Nature Made softgel 179932 · Garden of Life 285634 · Nature Made gummies 239941. Prices read the same week; the Jarrow figure is the two-bottle pack the brand sells, halved. Every figure in the "per serving" column is vitamin B12 itself rather than a standardised material — see below for where that stops being true.
The one place the number is not the vitamin
On a finished capsule, tablet or gummy, the Supplement Facts figure is the vitamin, which is what lets the table above compare nine products in one column. It stops being true on bulk powders, because B12 is potent enough that the raw material is sold pre-diluted onto a carrier — and the dilution goes in the product name. The same database lists, from one manufacturer, several tubs called "Vitamin B12 1% (Methylcobalamin)". The 1% is the point: a hundred milligrams of that powder is one milligram of B12.
This is the class of error that produced a public correction on the alpha-GPC ranking. The difference is that alpha-GPC hides it on the finished pack and B12 hides it only on the raw ingredient. Checking which number is which is covered in how to read a supplement facts panel.
What the research says about the amount, and in whom
Two facts sit awkwardly together, and this shelf's marketing depends on nobody putting them side by side. The first is that absorption is capped: B12 is taken up by a carrier-mediated route that saturates after a couple of micrograms per dose, after which the remainder crosses the gut wall by passive diffusion at very low efficiency. A 5,000 mcg tablet does not deliver two thousand times what a 2.4 mcg one does.
The second is that one larger amount does have a rationale. A 2006 review in Nutrition Reviews concluded that 500 mcg a day of the crystalline form was the oral amount required to normalise biochemical markers in older adults with poor B12 status, and noted that adults over 50 are advised to meet the RDA using the crystalline form found in supplements and fortified foods, because releasing B12 bound to food protein depends on stomach acid and enzymes that decline with age in a substantial minority (Park & Johnson, Nutrition Reviews, 2006; review of the oral-dose literature in adults over 50). It put the share of older adults with marginal or low status at 5% to more than 20%, depending on the cut-off.
That is why 500 mcg appears three times in the table. Nothing establishes that 5,000 mcg does more, and the products carrying it do not claim it does — they print the number and let it speak. The argument between the two most-discussed forms is in methylcobalamin and cyanocobalamin.
The rankings
1
Weal Focus
by Weal Supplements
8.8/10 desk score B+
- Form named
- 9.5
- Amount vs the RDA
- 9.5
- Route
- 8.0
- What else is in it
- 10
- Cost per day
- 2.0
Pros
- 500 mcg as methylcobalamin — the amount with a published rationale behind it, not the largest number that would fit on a pouch
- Prints form, amount and percentage of Daily Value, so the 20,833% figure is on the panel rather than left to be worked out. Every other active is printed the same way
Cons
- The most expensive B12 here by a wide margin at $1.33 a day, twenty-six times the cheapest capsule. Nobody should buy this for its B12
- A five-active formula, so the amount is not adjustable, and a swallowed capsule with no lozenge or chewable option
First on the four factors a label can settle, last on the fifth. The argument for it is proportion; the argument against it is that a bottle of B12 costs five cents a day, and this is not a bottle of B12.
2
Vitamin B12 2,000 mcg
by Nutricost
8.5/10 desk score B+
- Form named
- 9.0
- Amount vs the RDA
- 6.5
- Route
- 8.0
- What else is in it
- 9.5
- Cost per day
- 10
Pros
- Five cents a day from a 240-capsule bottle at $11.97 — the price floor of this page
- Methylcobalamin named, one capsule per serving, nothing else in the capsule
Cons
- 2,000 mcg is roughly 830 times the reference intake, with no reason offered for that figure rather than a smaller one
- No lot-numbered certificate, so the shopping page's testing language cannot be matched to the bottle
If the question is simply where to buy B12, this is the answer and it is not close. What holds it off the top is the number: 2,000 mcg is a marketing figure rather than a studied one.
3
Methyl B-12 500 mcg Cherry
by Jarrow Formulas
8.3/10 desk score B+
- Form named
- 9.5
- Amount vs the RDA
- 9.5
- Route
- 8.5
- What else is in it
- 7.5
- Cost per day
- 9.0
Pros
- 500 mcg as methylcobalamin, in a chewable for people who would rather not swallow another capsule
- Ten cents a day, and the brand publishes the same tablet at 500, 1,000, 2,500 and 5,000 mcg, so the amount is a genuine choice rather than a default
Cons
- A flavoured chewable carries sweeteners and flavourings a plain capsule does not
- Sold as a two-bottle pack, so the per-bottle price in the table is a division rather than a printed figure
The best-judged product here on the two things hardest to get right together: a defensible amount and a format someone will keep taking. Offering one tablet across a tenfold range treats the number as a decision rather than a boast.
4
Vitamin B12 with Folate 500 mcg, Cherry
by Country Life
8.0/10 desk score B
- Form named
- 9.0
- Amount vs the RDA
- 9.5
- Route
- 8.0
- What else is in it
- 8.5
- Cost per day
- 8.5
Pros
- 500 mcg alongside 667 mcg DFE of folate, and — unusually here — the second ingredient is in the product name rather than hidden in the panel
- Thirteen cents a day from a 100-lozenge tub; one lozenge is one serving
Cons
- Cyanocobalamin rather than a form the category charges a premium for — a defensible choice the pack does not explain
- Folate has its own reasons to be taken or avoided, and a B12 buyer has not necessarily decided about it
A well-judged amount in a format that suits people who dislike swallowing pills, with the extra ingredient named on the front where it belongs. The same brand puts an unannounced vitamin B6 into its L-theanine capsule; here it does the opposite.
5
B12 Folate
by Pure Encapsulations
7.7/10 desk score B
- Form named
- 10
- Amount vs the RDA
- 8.0
- Route
- 8.0
- What else is in it
- 8.5
- Cost per day
- n/s
Pros
- The most specific ingredient line here: methylcobalamin 800 mcg beside folate declared as Metafolin, a named branded L-5-MTHF material, at 1,333 mcg DFE
- Naming the branded material makes the specification a look-up — the standard rewarded on the L-theanine shelf
Cons
- No price we could read on the brand's own site, so cost is unscored
- 800 mcg is unexplained: larger than the review's figure, smaller than the round numbers the rest of the shelf reaches for
The best-specified label here and the hardest to buy from the information published. Fifth because a specification a shopper cannot price is only half a disclosure.
6
Methyl B-12 5,000 mcg
by NOW
7.2/10 desk score B−
- Form named
- 9.0
- Amount vs the RDA
- 5.0
- Route
- 8.0
- What else is in it
- 9.5
- Cost per day
- n/s
Pros
- Family-owned manufacturer running its own testing laboratories, with an unusually thorough allergen statement across the range
- Clean single-ingredient capsule, one a day, methylcobalamin named
Cons
- 5,000 mcg is roughly 2,000 times the reference intake, with no rationale offered and absorption capped well below it
- No price we could read; the range runs 1,000 to 10,000 mcg with no published basis for choosing between them
A serious manufacturer making a competent capsule, which is why the criticism is narrow. A range spanning tenfold with no stated reason for any point on it turns a dosing decision into a shelf-presence strategy.
7
Maximum Strength B12 5,000 mcg
by Nature Made
6.9/10 desk score C+
- Form named
- 8.5
- Amount vs the RDA
- 4.5
- Route
- 7.5
- What else is in it
- 9.0
- Cost per day
- 6.5
Pros
- Cyanocobalamin named plainly, one softgel per serving, and a shopping page publishing price and count for every size in the range
- Thirty-seven cents a day, stable formula, wide distribution
Cons
- "Maximum Strength" is a claim about the pack, not about the person — it describes where this sits in the brand's own range and nothing more
- 5,000 mcg with no published rationale, at seven times the daily cost of a 2,000 mcg capsule from the same shelf
Correctly labelled and named after its own position in a product line. The objection is the framing: "maximum strength" invites a shopper to read a bigger number as a better one, on the one shelf where the absorption ceiling makes that the least safe assumption available.
8
mykind Organics B-12 Organic Spray, Raspberry
by Garden of Life
6.7/10 desk score C+
- Form named
- 9.5
- Amount vs the RDA
- 9.0
- Route
- 5.5
- What else is in it
- 7.0
- Cost per day
- n/s
Pros
- The most detailed source statement here: methylcobalamin declared as derived from Saccharomyces cerevisiae, at 500 mcg
- 140 servings in a 58 mL bottle, needing no water and no swallowing
Cons
- A spray's selling proposition is the route, and the route has the least published evidence behind it — the pack carries no comparison against a swallowed capsule
- Carries a 2 mg "certified organic food blend" whose components are not individually quantified, and no price we could read
Better on the label than its position suggests: the amount is right, the form is named, and the organism the material came from is printed. Eighth because the reason to buy a spray is an absorption claim the pack does not make and this desk cannot check.
9
Energy B12 Adult Gummies 1,000 mcg
by Nature Made
6.2/10 desk score C
- Form named
- 8.5
- Amount vs the RDA
- 6.0
- Route
- 6.5
- What else is in it
- 4.5
- Cost per day
- 7.0
Pros
- Declares calories and carbohydrate on the panel — 20 calories and 4 grams per serving — rather than leaving them to be inferred from the texture
- Cyanocobalamin named, and the least likely format here to be abandoned in a drawer
Cons
- The serving is two gummies, so an 80-count jar is 40 days — the count-versus-days trap found again on the L-theanine shelf
- Four grams of carbohydrate a day to deliver a vitamin a capsule delivers with none, and the word "Energy" is doing work the panel does not support
Last on the declared factors, and worth being fair about: the format problem in this category is that people stop taking things, and a gummy is the format people do not stop taking. The trade is legitimate — it should be made with the arithmetic visible, which is the argument of what a nootropic drink can and cannot carry.
Who actually needs which — and where the answer does not come from
The honest version of this section is short. Which form and amount suits any individual is a blood test and a doctor's question, and no ranking page has access to either. What a page like this can do is narrow the shelf: every panel here names its form, the amount with a published rationale in older adults is 500 mcg, and absorption is capped well below the largest numbers on offer. The two dietary situations that recur in the literature — diets without animal-source foods, and the age-related decline in releasing B12 from food protein — both point at the crystalline form rather than at any brand. Several common long-term medications are also associated with lower B12 readings in observational studies. Anyone wondering about their own levels should ask for the test rather than reason from a pack. Why a B-vitamin sits in a focus formula at all is in the forgotten nutrient.
The one thing worth taking away
This is the best-labelled shelf in the category and the worst-proportioned. All nine name their form of B12 — something neither the alpha-GPC shelf nor the lion's mane shelf comes close to. Three carry an amount in the thousands of micrograms with no published basis, on a shelf where absorption saturates in the low single figures. Disclosure and proportion are independent virtues, and this category has one of them. What the testing language is worth is in what "third-party tested" actually means.
What this publication's owner makes
Weal Focus is alpha-GPC 300 mg, lion's mane 400 mg at 100% fruiting body with beta-glucans of at least 25%, L-theanine 200 mg, zinc 15 mg as picolinate and vitamin B12 500 mcg as methylcobalamin, as two size 0 capsules a day. Every amount and form is printed, including the 20,833% of Daily Value that 500 mcg represents. It is also the most expensive B12 here by a factor of twenty-six.
Label panels for every product here, with database entry numbers and the population studied in each trial cited, are on our citations page.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.