CleanLabelReport
Supplement Review · Updated August 2026

Best Vitamin D + K2 Supplements 2026: Top 5 Ranked.

We read the labels of 29 vitamin D supplements. 21 of them are D3 on its own, with nothing to direct the calcium it raises. D3 raises the supply. MK-7 is the nutrient that acts on it. One capsule of 29 carried both, with the calcium and the uptake helper behind them.
The ProblemThe ChecksThe Ranking
Best vitamin D and K2 supplements 2026 ranked on D3 dose, MK-7 form, calcium and absorption support
The Problem

Why your vitamin D has nowhere to go.

Your blood test came back low, you were told to supplement, and you were given no number and no second ingredient. So you have been taking vitamin D on its own all winter. D3 without K2 moves calcium into your blood and then leaves it to find its own way, which is half the job at best.

Vitamin D3 has one job on a panel and it does it well. It raises how much calcium you pull out of your food. If you tested low, fixing that is worth doing. But raising the supply is not the same as putting it to use, and a D3-only capsule has no say in what happens next. K2 is the nutrient that switches on the proteins involved in that step. 21 of the 29 labels we read carry D3 and stop there.

Of the 8 labels that do add K2, 3 use menaquinone-4, which your body clears within hours. The comparative work favors menaquinone-7, because it holds in the blood from one dose to the next, and that is the entire premise of a once-a-day capsule. A label that prints K2 without saying which one is not telling you what you bought.

Two lines almost nobody prints. The first is calcium, sitting in the same capsule so the K2 step has material from the first dose instead of depending on what your last meal happened to contain. That is 1 label of 29. The second is an uptake helper, which counts for something when both headline nutrients only absorb alongside what rides with them. One formula of 29 carried all four lines.

Been taking D3 for a year and your numbers barely moved?

Two things to check before you raise the dose again. The amount, because a 400 to 2,000 IU drugstore softgel is a maintenance number and not a correction. And what came with it, because D3 is fat-soluble and absorbs alongside whatever else is in the capsule. A bare tablet with no fat and no uptake support is the least helpful way to take it.

Who It Is For

Who takes D3 with K2, and why.

The blood test came back low

Everyone in this country is

They were told to supplement and given no number and no cofactor.

Indoors all winter

Office, car, house, repeat

They have not had real sun on their skin since September.

Bone density on the report

The word osteopenia

They want the calcium to end up in the bone rather than anywhere else.

Already taking D alone

Wondering why nothing moved

D3 without K2 is half the conversation.

The Checks

Four checks. Three of them are about what happens after absorption.

01/04

D3 at five thousand IU

Five thousand IU is a correction. The 400 to 2,000 IU softgel in most drugstores is a maintenance number, which is why your level never moved.

Vitamin D3 · 125 mcg
02/04

K2 as MK-7, the form that lasts in the blood

MK-4 clears within hours. MK-7 holds from one dose to the next, which is the whole premise of taking one capsule a day.

Menaquinone-7
03/04

Calcium in the same capsule to route

K2 routes calcium. If there is none in the capsule, the step depends entirely on what your last meal happened to contain.

Calcium · 210 mg
04/04

Something in there to help it absorb

D3 is fat-soluble and absorbs alongside whatever rides with it. A bare tablet with nothing to help is the least useful form of a good nutrient.

BioPerine · 5 mg
Side by Side

Five bottles. One clears all four.

Suppla D3 + K2#1 PickSports Research Vitamin D3 + K2#2NOW Mega D-3 & MK-7#3Thorne Vitamin D-5,000#4Nature Made Vitamin D3 2,000 IU#5
CriteriaSuppla D3 + K2Sports Research D3NOW Mega D-3Thorne D-5,000Nature Made D3
Checks Passed4 of 42 of 42 of 41 of 40 of 4
D3 at 5,000 IU✓✓✓✓−
K2 as MK-7✓✓✓−−
Calcium Included✓−−−−
Absorption Support✓−−−−
Vitamin D3 Dose5,000 IU5,000 IU5,000 IU5,000 IU2,000 IU
Vitamin K2 Dose100 mcg · MK-7100 mcg · MK-7180 mcg · MK-7nonenone
Third-Party Tested✓✓−✓✓
Our Rating9.48.78.37.87.3
Scroll the table

Doses read from each brand's published Supplement Facts panel in August 2026. MK-7 and MK-4 are the two common forms of vitamin K2. MK-7 has the longer half-life, which is what makes once-daily dosing sensible.

The Ranking

Top 5 vitamin D and K2 supplements, by the label.

No. 01
Suppla D3 + K2
Ranked #1 of 29 labels read

Suppla D3 + K2

D3 5,000 IU · K2 MK-7 100 mcg · Calcium 210 mg · BioPerine · 1 Capsule Daily

4/4 ChecksD3 5,000 IUK2 as MK-7 100 mcgThird-Party TestedGMP · Manufactured in USA60-Day Guarantee
9.4
Label Score
Strengths 09
  • 125 mcg of vitamin D3, which is 5,000 IU and 625 percent of the daily value.
  • 100 mcg of vitamin K2 as MK-7, the long-acting form that suits once-daily dosing.
  • Calcium at 210 mg in the same capsule, so the routing has something to act on.
  • BioPerine black pepper extract at 5 mg for uptake of the two fat-soluble vitamins.
  • Only formula of 29 that carried all four lines on one panel.
  • One small veggie capsule a day, taken with a meal that contains some fat.
  • 60 capsules is a two-month supply, not a one-month bottle.
  • Third-party tested, GMP certified, manufactured in the USA.
  • 60-day money-back guarantee.
Limitations 02
  • Online only, not sold in retail stores.
  • The 210 mg of calcium is a cofactor dose, not a replacement for a full calcium supplement.
The verdict Buying D3 on its own raises the supply and leaves everything after that to chance. Two other bottles here pair it with K2 as MK-7, which is the right start. This is the only one of 29 that also carries calcium for that step to work on, and an uptake helper behind two fat-soluble nutrients. Four lines, one capsule, two months a bottle.
Check Availability ✓ 60-Day Money-Back Guarantee · Buy 3, Save 25%
The runners-up · 02 to 05
Sports Research Vitamin D3 + K2
No. 02

Sports Research Vitamin D3 + K2

Vegan Softgel · D3 5,000 IU from Lichen · K2 MK-7 100 mcg · Coconut MCT
2 of 4Vegan CertifiedThird-Party Tested
8.7
Label
Strengths
  • The right pair at the right numbers: 5,000 IU of D3 with 100 mcg of K2 as MK-7.
  • Plant-based D3 from lichen and K2 from fermented chickpea, in a vegan softgel.
  • Coconut MCT oil in the softgel gives the fat-soluble pair something to ride on, and every batch is third-party tested.
Limitations
  • No calcium in the capsule, so the K2 step depends entirely on what your last meal supplied.
  • No uptake cofactor beyond the oil base.
  • Softgel format, which is bulkier than a capsule for the same two nutrients.
The verdict The best of the pairs. It gets both headline numbers right, it is genuinely vegan, and the testing is stated. It stops at two ingredients, which is where the last two checks live.
NOW Mega D-3 & MK-7
No. 03

NOW Mega D-3 & MK-7

Veg Capsule · D3 5,000 IU · K2 MK-7 180 mcg as MenaQ7 · Soy-Free
2 of 4Highest K2 DoseRetail Brand
8.3
Label
Strengths
  • The largest K2 dose on this page at 180 mcg, and it is MenaQ7 branded MK-7 from chickpea.
  • The full 5,000 IU of D3 alongside it, in a veg capsule, widely stocked and inexpensive.
  • Both actives printed with their own numbers, no blend.
Limitations
  • No calcium and no uptake cofactor, so it covers the same two checks as the pick above it.
  • Modified starch and maltodextrin in a capsule that only needs to carry two nutrients.
  • No third-party certification stated on the label.
The verdict A generous K2 dose on a familiar shelf brand, at a price that is hard to argue with. Same two checks as second place, with a longer other-ingredients line and no testing claim.
Thorne Vitamin D-5,000
No. 04

Thorne Vitamin D-5,000

Veg Capsule · D3 5,000 IU · No K2 · NSF Certified for Sport
1 of 4Practitioner BrandNSF Certified
7.8
Label
Strengths
  • A clean 5,000 IU of D3 from a brand with an unusually strong testing record.
  • NSF Certified for Sport, which is the strictest certification on this page.
  • Short, honest other-ingredients line.
Limitations
  • No K2 anywhere on the label, so nothing acts on the calcium the D3 helps you absorb.
  • No calcium and no uptake cofactor either.
  • You end up buying a second bottle to finish the job.
The verdict If you want D3 and only D3, this is the best-made version of it on the page. As a bone and heart routine it covers one of four checks, and it leaves the other three to a bottle you have not bought yet.
Nature Made Vitamin D3 2,000 IU
No. 05

Nature Made Vitamin D3 2,000 IU

Softgel · D3 2,000 IU · Soybean Oil Base · USP Verified · No K2
0 of 4DrugstoreUSP Verified
7.3
Label
Strengths
  • USP Verified, which is a real third-party check on label accuracy.
  • The cheapest and most available option here, in every pharmacy in the country.
  • Softgel with an oil base, which suits a fat-soluble vitamin.
Limitations
  • 2,000 IU is a maintenance number, not the correction dose the other four carry.
  • No K2, no calcium, nothing to help uptake.
  • Soybean oil base and a gelatin softgel, so it is not vegetarian.
The verdict An accurate label around a small number. If you already test in range and just want to hold there, it does that. Measured against the four checks on this page, it clears none of them.
What Changes, When

What it actually feels like, week by week.

Week 01 to 02

The routing starts

The routing starts. Nothing to feel, and this is the part that decides where the calcium ends up.

Week 04 to 08

Your level finally climbs

Your level finally climbs. This is the one you can measure, and it is the reason a real dose beats a maintenance one.

Month 03 +

It holds through winter

It holds through winter. That is the point of MK-7 and of taking it daily rather than remembering it in January.

Before You Buy

What you are about to spend money on.

Five thousand IU of D3, K2 printed as MK-7, calcium in the same capsule, and something to help it absorb.
Because D3 raises how much calcium you take in, and K2 decides where it goes. Taking the first without the second is half the job.
Blood levels usually move across two to three months. It is slower than people expect, which is why the dose matters.
Every day, all year. Levels fall fastest in winter, but they do not hold on their own in summer either.
What we would buy

D3, MK-7, calcium, cofactor. Get through winter like it is spring.

One formula of 29 passed all four checks. This is it.

Our top pick
Suppla D3 + K2
Suppla D3 + K2
Suppla · 60 veggie capsules
9.4 / 10
  • Vitamin D3 at 125 mcg, which is 5,000 IU
  • Vitamin K2 at 100 mcg as MK-7, the long-acting form
  • Calcium 210 mg and BioPerine 5 mg on the same panel
  • One small veggie capsule a day, 60 per bottle, two months
  • Third-party tested, GMP certified, manufactured in the USA
Check Availability →
✓ 60-Day Money-Back Guarantee · Buy 3, Save 25%
The Evidence

Why D3 and K2 belong on the same label.

Vitamin D3 increases intestinal calcium absorption. Vitamin K2 activates the vitamin K-dependent proteins involved in bone mineralization. Comparative work on the two K2 forms has reported that menaquinone-7 stays in circulation far longer than menaquinone-4. That is what makes once-daily dosing reasonable. A three-year study of low-dose menaquinone-7 reported support for bone mineral density in postmenopausal women. Low vitamin D status is common wherever sun exposure is limited.

References

  1. Holick MF. Vitamin D deficiency. N Engl J Med. 2007. PubMed
  2. Schurgers LJ, et al. Vitamin K-containing dietary supplements: comparison of synthetic vitamin K1 and natto-derived menaquinone-7. Blood. 2007. PubMed
  3. Sato T, et al. Comparison of menaquinone-4 and menaquinone-7 bioavailability in healthy women. Nutr J. 2012. PubMed
  4. Knapen MH, et al. Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women. Osteoporos Int. 2013. PubMed
  5. Bischoff-Ferrari HA, et al. Estimation of optimal serum concentrations of 25-hydroxyvitamin D for multiple health outcomes. Am J Clin Nutr. 2006. PubMed

Editorial Disclosure

Affiliate Disclosure: We may earn a commission when you click links on this page and make a purchase. Placements are decided from each product's published label data measured against the criteria on this page. Competitor formulas reflect each brand's publicly listed specifications as of the update date shown and may vary by SKU or batch. Brand names belong to their respective owners and are referenced for comparison only. Competitor information reflects publicly available labels as of August 2026.

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Talk to your healthcare provider before starting any supplement, especially if you take medication, are pregnant, or nursing.

© 2026 Clean Label Report. All rights reserved.

Suppla D3 + K2
9.4 / 10 · #1 of 29 labels
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