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The best vitamin d3 + k2 supplements of 2026

The best vitamin D3 plus K2, ranked on the parts of the label you can actually check: the form of the K2, whether there is a fat to carry these two fat-soluble vitamins, and the dose.

Every number below is a manufacturer figure, read off the label. This category has almost no third-party purity certification, so the honest way to rank it is by formula and delivery: K2 as MK-7, which stays in the blood far longer than MK-4, over MK-4; an oil or liquid carrier over a dry capsule; a sensible D3 dose; and the one independent mark that does exist here, Non-GMO Project Verified, which you can look up at nongmoproject.org. Our top pick, Sports Research, is the one product that lines up on all of them.

Last updated
July 15, 2026
How we rank: published specs, third-party certifications, and what verified buyers report.
§ 01 · Top 5 Rankings

Our top 5 picks for vitamin d3 + k2 supplements

As an Amazon Associate I earn from qualifying purchases.

#1
EDITOR'S CHOICE
Sports Research Vitamin D3 + K2
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Sports Research

Sports Research Vitamin D3 + K2

9.4/10JellyReviews Score

Our top pick because it lines up on every checkable thing that matters for a D3 plus K2. The K2 is MK-7, the form that stays in your system longest, at 100 mcg. The D3 is 5000 IU (125 mcg). Both sit in coconut MCT oil, so the fat these two fat-soluble vitamins need to absorb is built into the softgel instead of depending on what you ate. It is Non-GMO Project Verified, a mark you can confirm yourself at nongmoproject.org, and it is fully vegan, with D3 from lichen and K2 from fermented chickpeas. The one thing it does not do is name a branded K2 ingredient, so on traceability it trails Live Conscious. Everywhere else on this page it leads.

Pros
The K2 is the MK-7 form, which has a much longer half-life in the blood than the MK-4 some rivals use, so one dose a day keeps working between servings
Non-GMO Project Verified, a real third-party mark you can look up yourself at nongmoproject.org, which most products in this category do not carry
The D3 and K2 sit in coconut MCT oil, so the fat these two fat-soluble vitamins need to absorb is built into the softgel rather than left to your meal
Fully vegan, with D3 from lichen and K2 from fermented chickpeas, and the bottle holds 120 days at one softgel a day
Cons
The label names the K2 as coming from fermented chickpeas but does not tie it to a branded, traceable ingredient the way Live Conscious does, so you are trusting the batch testing
It is a fixed-dose softgel, so unlike the Thorne liquid below you cannot dial the amount up or down
Where to buy
Amazon
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#2
RUNNER-UP
Live Conscious K2+D3
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Live Conscious

Live Conscious K2+D3

9.1/10JellyReviews Score

The one that matches our top pick on the numbers: 5000 IU of D3 and 100 mcg of K2 as MK-7, in an oil-based softgel that carries the two fat-soluble vitamins. Its edge over Sports Research is traceability, because the K2 here is a patented MK-7 rather than a generic one, so you know exactly which ingredient you are getting. Its trade-offs are the shell and the paperwork. The softgel is bovine gelatin, so it is not for vegetarians, where Sports Research and MegaFood are. And where Sports Research carries a Non-GMO Project Verified mark you can look up, Live Conscious offers a brand seal and an unnamed "third-party tested" claim. If you want the MK-7 formula with a traceable ingredient and the gelatin shell does not bother you, this is the pick.

Pros
The same headline formula as our top pick: 5000 IU of D3 and 100 mcg of K2 as MK-7, the long-lasting form, in an oil-based softgel
The K2 is a patented MK-7, so the exact ingredient is traceable rather than generic, which is unusual in this category
One softgel per serving, with the oil carrier the two fat-soluble vitamins need built in
Cons
The softgel shell is bovine gelatin, so it is not vegetarian or vegan, unlike Sports Research and MegaFood
Its "third-party tested" line is a brand claim with no named lab or certificate, and its non-GMO is a brand seal, not the independent Non-GMO Project Verified mark that Sports Research carries
Where to buy
Amazon
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#3
CLEANEST LABEL
MegaFood Vitamin D3 5000 IU plus K & K2
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MegaFood

MegaFood Vitamin D3 5000 IU plus K & K2

8.9/10JellyReviews Score

The cleanest-label pick, and the one to buy if independent verification and a whole-food formula matter more to you than the last detail of dose. It is Non-GMO Project Verified and Glyphosate Residue Free, both of which are printed on MegaFood's own product page rather than merely asserted, and it is made without the nine major allergens. It also gives you both K1 and K2 as MK-7 in a single vegetarian capsule. The catch is delivery: it is a dry capsule, not an oil softgel, so take it with a meal that has some fat, because D3 and K2 both need fat to absorb. That is the reason it sits below the two oil-based softgels above, not the formula.

Pros
The most independently verified label here: Non-GMO Project Verified and Glyphosate Residue Free, both confirmed on MegaFood's own product page rather than merely claimed
It carries both K1 and K2 as MK-7, so you get the two forms of vitamin K in one capsule rather than K2 alone
A whole-food formula made without the nine major allergens, vegetarian, and one small capsule a day
The 120-count bottle we link is a four-month supply at one a day
Cons
It is a dry capsule with no oil carrier, so unlike the softgels above it leans on the fat in your meal to absorb these two fat-soluble vitamins
It leads on a clean, whole-food label rather than on potency, so if the highest K2 dose in an oil base is what you want, the two softgels above edge it
Where to buy
Amazon
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#4
Thorne Vitamin D + K2 Liquid
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Thorne

Thorne Vitamin D + K2 Liquid

8.6/10JellyReviews Score

The pick for anyone who wants to control the dose rather than accept a fixed one. It is a liquid with a metered dropper, in MCT oil, from a brand clinicians trust, and one small bottle holds 600 servings. Two things set it apart from the softgels above, and not always in its favor. Its K2 is MK-4, which leaves the blood much faster than MK-7, so it does not carry you as far between doses. And the standard two-drop serving is 1000 IU of D3, so to match the 5000 IU products you would take more of it. Where it wins is flexibility: if you want a low, adjustable maintenance dose, or you are dosing on a clinician's instruction, the dropper is the reason to choose it. Mind the vitamin K interaction warning if you take a blood thinner.

Pros
A metered-dropper liquid, so you can set the dose exactly, from a small maintenance amount up, which the fixed-dose softgels cannot do
The drops are in MCT oil, so the fat these two vitamins need to absorb is built in
From a brand widely used by clinicians, and the 1 fl oz bottle holds 600 servings
Cons
The K2 here is MK-4, which clears the blood far faster than the MK-7 in the products above, so it does not last as long between doses
The standard two-drop serving is 1000 IU of D3, a fifth of the 5000 IU picks, so you would take more drops to match them
It carries a vitamin K interaction warning: anyone on a blood thinner such as warfarin should not use it without a doctor
Where to buy
Amazon
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#5
Life Extension Vitamins D and K with Sea-Iodine
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Life Extension

Life Extension Vitamins D and K with Sea-Iodine

8.3/10JellyReviews Score

The broad-spectrum pick, for someone who wants every form of vitamin K in one capsule rather than a single one. It carries K1 alongside K2 in both the MK-4 and MK-7 forms, so you get the fast MK-4 and the long-lasting MK-7 together, plus 5000 IU of D3. It also adds iodine, which is the thing to think hardest about: it helps if your diet is short on it, but it is not what you came for if you just want D3 and K2, and anyone managing a thyroid condition should clear the iodine with a doctor. Like MegaFood it is a dry capsule, so take it with a meal that has some fat. Choose it for the complete vitamin K profile, not as your default D3 plus K2.

Pros
The widest vitamin K coverage here: it is the only product on this page that carries K2 in both the MK-4 and MK-7 forms, and it adds K1 on top
5000 IU of D3 in one once-daily capsule
It adds iodine for thyroid support, which none of the others do
Cons
It is not a plain D3 plus K2: the added iodine is a benefit only if you actually want more of it, and anyone with a thyroid condition should check with a doctor first
A dry capsule with no oil carrier, so like MegaFood it leans on the fat in your meal to absorb
Where to buy
Amazon
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§ 02 · Side-by-side comparison

Compare all 5 at a glance

RankProductBrandScoreBest for
#1Sports Research Vitamin D3 + K2Sports Research9.4EDITOR'S CHOICE
#2Live Conscious K2+D3Live Conscious9.1RUNNER-UP
#3MegaFood Vitamin D3 5000 IU plus K & K2MegaFood8.9CLEANEST LABEL
#4Thorne Vitamin D + K2 LiquidThorne8.6-
#5Life Extension Vitamins D and K with Sea-IodineLife Extension8.3-
§ 03 · Buying guide

How to choose the right vitamin d3 + k2 supplement

01Why K2 belongs with your vitamin D3 in the first place

The two work as a pair. Vitamin D3 raises how much calcium your body absorbs from food. Vitamin K2 then activates the proteins that decide where that calcium goes, steering it into bone and away from soft tissue like your arteries. Taking a large amount of D3 on its own lifts the calcium load without directing it, which is the argument for pairing them, and it is why every product on this page combines the two rather than selling D3 alone.

Both are fat-soluble, which is the practical detail most labels skip. They absorb best alongside fat. That is why the softgel and liquid picks here suspend them in coconut MCT or another oil, and why the dry-capsule picks work best when you take them with a meal that has some fat in it rather than on an empty stomach.

02MK-7 or MK-4: the one K2 detail that actually changes the product

Vitamin K2 comes in two forms, and they are not interchangeable. MK-4 acts fast but clears the blood within hours, so it is usually dosed several times a day or at a high single amount. MK-7 stays in circulation far longer, cited in days rather than hours, so a single daily dose keeps working. That is why four of the five here use MK-7, with Life Extension pairing it with MK-4 and K1, and only the Thorne liquid relies on MK-4 alone, which is the main reason it sits where it does despite being an excellent brand.

One product gives you both. Life Extension carries K1, MK-4 and MK-7 together, which is the widest coverage on the page. If you read only one line on the supplement facts panel of a D3 plus K2 product, make it the K2 form.

03What certification you can and cannot expect here

Unlike creatine or protein powder, vitamin D3 plus K2 has almost no third-party purity certification. None of these five advertises an NSF, USP or Informed mark for its D3 plus K2, and the public registers we could search do not list them, so do not rank on a certification that is not there. The one independent mark that does show up in this category is Non-GMO Project Verified, which Sports Research and MegaFood both carry and which you can confirm yourself at nongmoproject.org.

That leaves the label itself as the thing to read, which is why this page ranks on what the label plainly states: the K2 form, whether the two vitamins have a fat to absorb with, and the dose. Every figure we quote is the manufacturer's own, taken from the product page or the supplement facts panel.

§ 04 · FAQ

Questions about vitamin d3 + k2 supplements

They work better together than either does alone. Vitamin D3 increases how much calcium you absorb, and vitamin K2 activates the proteins that direct that calcium into bone and away from your arteries. Taking a high dose of D3 by itself raises your calcium absorption without guiding where it ends up, which is the reason many people pair the two. If you already get plenty of K2 from foods like natto, hard cheeses and egg yolks, a combined supplement matters less, but for most people on a higher-dose D3 it is a sensible pairing.

For a once-a-day supplement, MK-7 is usually the better choice because it stays in your bloodstream much longer than MK-4, which clears within hours. That longer half-life is why most D3 plus K2 products, including four of the five here, use MK-7. MK-4 is not worse in itself, but it is best taken in divided doses through the day or at a higher single amount, which is harder to do with a once-daily pill. A few products, like the Life Extension one here, include both forms.

For many adults 5000 IU (125 mcg) a day is a common maintenance or correction dose, and it is the amount most of the products here use. The right dose depends on your blood level, your skin, where you live and how much sun you get, so the honest answer is to have your 25-hydroxyvitamin D tested and let that guide you. If you want a lower daily amount, the adjustable liquid on this page lets you take less, and lower-dose capsules exist. Very high doses over long stretches can cause harm, so more is not automatically better.

Not without talking to your doctor first. Warfarin works by interfering with vitamin K, so adding a K2 supplement can change how well the drug controls your blood, and that is exactly why products like the Thorne liquid here carry a vitamin K interaction warning. This is not a reason for everyone to avoid K2, it is a specific caution for people on vitamin K antagonist anticoagulants. If that is you, the dose has to be steady and cleared with the clinician managing your medication.

The verdict

Sports Research Vitamin D3 + K2 is our top pick, because it lines up on every checkable thing: K2 as long-lasting MK-7, an oil carrier for the two fat-soluble vitamins, a sensible 5000 IU of D3, and a Non-GMO Project Verified mark you can look up. Live Conscious matches that formula and adds a patented, traceable K2, so it is the alternative if the bovine-gelatin shell does not bother you. MegaFood is the pick if a clean, whole-food, independently verified label matters most, as long as you take the dry capsule with food. Choose Thorne if you want to set the dose yourself with a dropper, and Life Extension if you want K1, MK-4 and MK-7 together in one capsule. The main thing to know before you buy: this category has almost no purity certification, so rank on the K2 form and whether there is a fat to carry it, not on a badge.

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