What is the cheapest NSF certified vitamin D3?
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.
At 5,000 IU, the cheapest is BulkSupplements.com Vitamin D3 5,000 IU Softgels (500 count), at 1.12¢ before delivery. At 2,000 IU, NSF names one package we price: Momentous Vitamin D3 2,000 IU (60 capsules), at 16.7¢ before delivery.
5 of the 46 plain vitamin D3 products we track have their exact package named in NSF's Certified for Sport database. That is a stricter test than “the brand is NSF certified”, and it is deliberately so: NSF lists package sizes against each certificate, and a size it does not name is not one it has stood behind. Each price is delivered where the retailer publishes a delivery rate and before delivery where it does not, and each row says which. This page counts NSF's Certified for Sport database only, because its listings name the package size, which lets us check the exact package on sale. Informed Sport and Informed Choice list products rather than package sizes, a different way of answering the question rather than a lesser one.
5,000 IU: 4 products
| Product | Per 1,000 IU | Container | Delivery |
|---|---|---|---|
| BulkSupplements.com Vitamin D3 5,000 IU Softgels (500 count) buy | 1.12¢ before delivery | $27.97 | not published |
| Momentous Vitamin D3 5,000 IU (60 capsules) buy | 6.33¢ before delivery | $18.99 | not published |
| Thorne Vitamin D-5,000, NSF Certified for Sport (120 capsules) buy | 6.50¢ delivered | $39.00 | free |
| Thorne Vitamin D-5,000, NSF Certified for Sport (60 capsules) buy | 6.67¢ delivered | $20.00 | free |
2,000 IU: 1 product
| Product | Per 1,000 IU | Container | Delivery |
|---|---|---|---|
| Momentous Vitamin D3 2,000 IU (60 capsules) buy | 16.7¢ before delivery | $19.99 | not published |
NSF's listing names another package
NSF lists this product, and the listing names a package size other than the one we price. NSF has not put its name to this package.
- BulkSupplements.com Vitamin D3 5,000 IU Softgels (365 count) (1.42¢ per 1,000 IU, before delivery)
Cheapest at each strength among the 5 plain vitamin D3 packages we track that NSF names at the exact package, not the cheapest that exists. NSF certifies plain vitamin D3 from more brands than we carry, and our catalog is extended brand by brand, so a certified product we have not added yet cannot appear here however cheap it is.
Every brand in this category, by program: Which vitamin D3 brands are third-party tested? Vitamin D3 1,000 IU vs 5,000 IU: which costs less? How much more does vitamin D3 with K2 cost? Is Momentous vitamin D3 NSF certified? Is BulkSupplements vitamin D3 NSF certified?
Vitamin D3 + K2, ranked on its own
A package that pairs D3 with K2 is a different purchase from plain D3, so it is never ranked against the tables above. Of the 21 D3 + K2 packages we track, NSF names 2 at their exact package. At 5,000 IU, NSF names one package we price: Core Med Science Vitamin D3 5,000 IU + K2 100 mcg (60 capsules), at 6.66¢ before delivery. At 2,000 IU, NSF names one package we price: Core Med Science Vitamin D3 2,000 IU + K2 100 mcg (60 capsules), at 14.2¢ before delivery. Every D3 + K2 package we track.
Where to buy: the picks, by labeled strength
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 10 products and 10 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 8 products and 8 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 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 12 products and 12 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 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. No product here that clears every other bar publishes a delivery rate below its free-delivery threshold, so the pick is priced before delivery.
How these lines are chosen
Among 10 products and 10 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. No product here that clears every other bar publishes a delivery rate below its free-delivery threshold, so the pick is priced before delivery.
Full comparison of every product in this category: Vitamin D3. 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.