Sports Research Vitamin D3 + K2 is the lowest-scoring product in our vitamin D roundup (69/100), and it is also the most expensive per serving — by a wide margin. Those two facts are related. The formulation is genuinely good for its intended buyer: vegan D3 derived from lichen, the longer-lasting MK-7 form of K2, a clean plant-based capsule. But you pay a steep premium for that vegan sourcing, and the label pairs it with a 5,000 IU dose that sits above the tolerable upper limit — so the honest cost question is not just “how much” but “how much for a dose most people shouldn’t take daily.” We pulled Sports Research’s published pricing, checked July 2026, and turned it into the three numbers that matter: per serving, per month, per year.
The cost, in one table
Sports Research sells one product here — a 60-serving bottle of vegan D3 + K2 softgels — at about $23.95, available through major retailers and its own channels rather than a subscription-first auto-ship, so there is no recurring charge to cancel. A 60-serving bottle is roughly a two-month supply at one capsule a day, which is why the monthly and yearly figures below matter more than the sticker on the bottle. Figures checked July 2026.
| Bottle price (60 servings) | ~$23.95 | one-time, no subscription needed |
|---|---|---|
| Cost per serving (5,000 IU D3 + 100 mcg K2) | ~$0.40 | the priciest vitamin D in our field |
| Cost per month (~30 servings) | ~$12 | daily use |
| Cost per year (~365 servings) | ~$146 | about six bottles |
What that buys next door
The number that reframes Sports Research’s price is the per-serving comparison. Our best overall and best-value pick, Nature Made D3 2,000 IU (87/100), runs about $0.13 a serving and is USP Verified — a credential Sports Research doesn’t carry — at a sensible maintenance dose. NOW D-3 2,000 IU (84/100) is cheaper still at about $0.07 a serving, roughly a fifth of Sports Research’s price. If you specifically want a D3 + K2 combo, Thorne D + K2 liquid (81/100) pairs 1,000 IU of D3 with K2 at about $0.06 a serving and carries NSF Contents Certification. So Sports Research’s premium buys one real thing the cheaper bottles don’t: a genuinely vegan, lichen-derived D3 in a plant-based capsule. What it does not buy is a better-verified or more sensibly dosed vitamin D — the dose is 5,000 IU, above the 4,000 IU upper limit, and the testing names no lab. Whether the vegan sourcing is worth three to six times the price is the honest question; if you cannot or will not take an animal-derived softgel, likely yes, and if you can, that money is buying a premium format rather than a better result. The alternatives page lays out the cheaper verified routes.
Frequently asked questions
How much does Sports Research Vitamin D3 + K2 cost per serving?
About $0.40 a serving, based on a ~$23.95 bottle of 60 servings, checked July 2026. That is the priciest vitamin D in our field by a wide margin — three to six times a mainstream verified D3 — and the premium is the vegan, lichen-derived sourcing and plant-based capsule, not a better or safer dose.
How much is Sports Research Vitamin D3 + K2 per month and per year?
At one capsule a day it works out to about $12 a month and about $146 a year (roughly six 60-serving bottles). A verified maintenance-dose D3 like Nature Made 2,000 IU runs closer to $47 a year for the same fat-soluble vitamin.
Why is Sports Research Vitamin D3 + K2 so expensive?
You’re paying for genuinely vegan D3 — sourced from lichen rather than lanolin or fish — delivered in a plant-based capsule with an oil base. That vegan sourcing is a real cost. What the premium does not buy is a better-verified or more sensibly dosed product: it carries no USP or NSF mark, and the 5,000 IU dose is above the 4,000 IU upper limit.
Is Sports Research Vitamin D3 + K2 worth the price?
Only if you specifically need a vegan D3 + K2 and your doctor is fine with the 5,000 IU dose — then it is the best-built vegan option in our field. As a default vitamin D it is hard to justify: a sensible 1,000–2,000 IU verified product covers most people for a fraction of the yearly cost.
Sources
- Sports Research — official product and pricing pages (vegan lichen-derived D3, 5,000 IU / 125 mcg per serving; 100 mcg K2 as MK-7; plant-based PlantGel capsule with coconut MCT and olive oil; ~60 servings per bottle, ~$23.95). Checked July 2026. sportsresearch.com
- The Ingredient Report — Sports Research Vitamin D3 + K2 review (69/100), the vitamin D roundup, and scored reviews of Nature Made D3 2,000 IU (87/100), NOW D-3 2,000 IU (84/100) and Thorne D + K2 (81/100). Checked July 2026.
Update history
- July 17, 2026 — Page first published. Facts checked this date. Next check: August 2026.
Content is for informational purposes only and is not medical or financial advice. Medical disclaimer.