How much more does vitamin D3 with K2 cost?
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, BulkSupplements.com sells the same count of softgels with and without K2: $24.97 plain against $22.97 with K2, so the K2 costs $-2.00 a bottle, 100 mcg per softgel.
Both products are compared on their D3 content only, and the K2 never enters the ranking. Whether the K2 does anything you would notice is a separate question, argued with the trials in the note linked below. This page is the price of it.
| Strength | Plain, per 1,000 IU | With K2, per 1,000 IU | K2 per softgel | Counts |
|---|---|---|---|---|
| 1,000 IU | 18.3¢ | 5.67¢ | 200 mcg | 180 vs 600 (different counts, so bottle prices are not comparable) |
| 5,000 IU | 1.37¢ | 1.26¢ | 100 mcg | 365 vs 365 |
| 5,000 IU | 3.99¢ | 2.83¢ | 100 mcg | 60 vs 120 (different counts, so bottle prices are not comparable) |
| 5,000 IU | 1.05¢ | 11.3¢ | 100 mcg | 360 vs 30 (different counts, so bottle prices are not comparable) |
| 5,000 IU | 1.05¢ | 7.98¢ | 100 mcg | 360 vs 60 (different counts, so bottle prices are not comparable) |
| 5,000 IU | 1.05¢ | 7.33¢ | 100 mcg | 360 vs 120 (different counts, so bottle prices are not comparable) |
| 10,000 IU | 0.36¢ | 0.72¢ | 200 mcg | 500 vs 360 (different counts, so bottle prices are not comparable) |
| 10,000 IU | 1.25¢ | 4.83¢ | 100 mcg | 120 vs 60 (different counts, so bottle prices are not comparable) |
| 50,000 IU | 0.14¢ | 0.16¢ | 200 mcg | 365 vs 365 |
Prices before delivery, from the same retailer for both products in each pair. K2 amounts are read from the label where the panel prints them and from the product description where it does not; each product page says which.
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 6 products and 6 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 11 products and 11 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 publishes a delivery rate below its free-delivery threshold, so the pick is priced before delivery.
OPINIONWe also wrote an argued piece on whether the K2 has been shown to do anything. It is kept off this page on purpose: everything above is computed, and that is not.
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.