What is the cheapest vitamin B12?
Our picks, by labeled strength, with a link to buy them: see where to buy. A strength with nothing certified at it has no pick, and is not listed there.
There is a cheapest at every labeled strength, and the winner changes with the strength. We can price 23 vitamin B12 packages across 7 labeled strengths, both forms together. The cheapest at 200 mcg is 18.0¢ per 1,000 mcg and the cheapest at 5,000 mcg is 2.16¢, before delivery. That is arithmetic, not a reason to buy a stronger bottle.
Which is why this page ranks inside each strength rather than across all of them. Strength is not a thing to choose on price, and 1,000 mcg is the unit this site prices vitamin B12 against, not an amount anyone should take. Pick the row at the strength you already buy. Both forms are in one table: each row's form is read from its own Supplement Facts panel and shown as a spec, and nothing here compares how the body uses them. The two forms side by side at the same strength is its own page.
| Labeled strength | Cheapest per 1,000 mcg | Packages we price | Cheapest package | Tested? |
|---|---|---|---|---|
| 200 mcg | 18.0¢ | 4 | BulkSupplements.com Vitamin B12 Cyanocobalamin 200 mcg (500 capsules) buy cyanocobalamin | D · None located |
| 500 mcg | 13.3¢ | 1 | Nutricost Vitamin B12 500 mcg (240 capsules) buy methylcobalamin | D · None located |
| 720 mcg | 83.3¢ | 1 | Havasu Nutrition Organic Methyl B12 Liquid 720 mcg (1 fl oz) buy methylcobalamin | D · None located |
| 1,000 mcg | 6.65¢ | 7 | Nutricost Vitamin B12 1,000 mcg (240 capsules) buy methylcobalamin | D · None located |
| 2,000 mcg | 3.54¢ | 3 | Nutricost Vitamin B12 2,000 mcg (240 capsules) buy methylcobalamin | D · None located |
| 3,000 mcg | 9.26¢ | 2 | MegaFood Extra Strength Methyl B12 3,000 mcg (90 capsules) buy methylcobalamin. Second active this price does not pay for: organic beetroot juice powder 200 mg | D · None located |
| 5,000 mcg | 2.16¢ | 5 | Nutricost Vitamin B12 5,000 mcg (240 capsules) buy methylcobalamin | D · None located |
200 mcg, 1,000 mcg, 3,000 mcg and 5,000 mcg are sold in both forms by the brands we track, so the cheapest row there was chosen across the two forms on price alone; at every other strength the ranking is within one form.
Every price is per 1,000 mcg of vitamin B12 as the product's own Supplement Facts panel states it, before delivery, and is the price we last recorded at the retailer named on each product page. The cheapest row at a strength and the cheapest certified row at it can be different products; the Tested column says which this one is, and which vitamin B12 brands are third party tested is its own page. Every package at its own strength, form by form: methylcobalamin and cyanocobalamin.
Where to buy: the pick for each type
The pick is the cheapest certified product, at the exact package sold where the certifier names packages, with no adverse finding on record, a price its retailer let us read recently, and no more than a year’s supply at the label’s serving; per delivered dose where the retailer publishes a delivery rate. Where none does, it is the cheapest such product before delivery, and it says how far the order is from free delivery. It is the same pick the category page shows.
How these lines are chosen
Among 4 products and 4 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
How these lines are chosen
Among 3 products and 3 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
How these lines are chosen
Among 1 product and 1 retailer listing we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
How these lines are chosen
Among 1 product and 1 retailer listing we track; Amazon and Walmart are not included. A month is thirty doses of the size in the heading, priced the same way as the per-dose figure beside it. “Delivery known” ranks only products whose retailer publishes a delivery rate; a cheaper product with an unpublished rate is on its own line, or in the full list below.
Full comparison of every product in this category: Vitamin B12. Every question we answer: the question index.
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.