Is Nature Made vitamin B12 USP Verified?
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.
Partly: 7 of the 10 Nature Made vitamin B12 packages we compare, not all of them. USP's directory names a product and a strength, not a package, and USP says the mark on the label is how a buyer knows. So a package counts as USP Verified here only when both hold: the product is in USP's directory, which we read in full, and this package's own label prints the USP Verified Mark. Every row below marked yes or no was read against that directory, with the row it matches quoted; one row is not settled either way yet, and is marked that way, not as absent.
| Product | Package | USP Verified at this package? | Directory row |
|---|---|---|---|
| Vitamin B12 1000 mcg (90 softgels) buy | 90 softgels | Yes | Nature Made Vitamin B12 1000 Mcg Softgels |
| Vitamin B12 1000 mcg (150 softgels) buy | 150 softgels | Yes | Nature Made Vitamin B12 1000 Mcg Softgels |
| Vitamin B12 Fast Dissolve 1000 mcg (50 tablets) buy | 50 tablets | Yes | Nature Made Vitamin B12 1000 Mcg Fast Dissolve Tablets |
| Vitamin B12 Extra Strength 3000 mcg (60 softgels) buy | 60 softgels | Yes | Nature Made Vitamin B12 Extra Strength 3000 Mcg Softgels |
| Vitamin B12 Maximum Strength 5000 mcg (60 softgels) buy | 60 softgels | Yes | Nature Made Vitamin B12 Maximum Strength 5000 Mcg Softgels |
| Vitamin B12 Fast Dissolve Extra Strength 3000 mcg (40 tablets) buy | 40 tablets | Yes | Nature Made Vitamin B12 3000 Mcg Fast Dissolve Tablets |
| Vitamin B12 Extra Strength 3000 mcg Gummies (60 gummies) buy | 60 gummies | Yes | Nature Made Vitamin B12 Extra Strength 3000 mcg Gummies |
| Energy B12 1000 mcg Gummies (80 gummies) buy | 80 gummies | No directory row | None found |
| Energy B12 1000 mcg Gummies (150 gummies) buy | 150 gummies | No directory row | None found |
| Zero Sugar Energy B12 Gummies 1000 mcg (110 gummies) buy | 110 gummies | Not settled | Nature Made Zero Sugar Vitamin B12 Gummies 1000 Mcg Per Serving (may cover this; not settled) |
Not in this comparison: Vitamin B12 500 mcg (100 tablets), Vitamin B12 500 mcg (200 tablets) and Vitamin B12 Extra Strength 2500 mcg (60 tablets), each USP Verified at its package. The comparison takes only packages whose panel prints no calcium beside vitamin B12 (decided October 2, 2026), so these are not in the table or its count. Each page has its price and certification records.
What the directory says
USP's Verified Products directory carries 6 rows matching products in this table, each quoted above beside the package it was read against. USP publishes no page for a single product and no listing ID, so the row itself is the record, and each product page names the day the directory was read.
2 products here had no row in USP's directory on the day it was read. A directory row is one of the two things this site needs before it calls a package USP Verified, and the card below says what each label prints. Absence from a directory is not a failed test.
One product here is not settled either way yet. A directory row may cover it; until that is settled against this exact package, the product page shows it as unchecked and it cannot be a pick. The card below names the directory row and says what the label prints.
What each product page shows
Every Nature Made product we track, across all categories: Is Nature Made third party tested?
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 5 products and 5 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 2 products and 2 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.