Best Vitamin D3 and K2 Supplements of 2026

Nearly every bottle here is 5,000 IU, which is the right strength for plenty of people and too much for plenty of others. NOW's version is the exception: 1,000 IU of D3 with 45 mcg of MK-7 per capsule. That is a maintenance dose — the sensible choice if your last blood draw came back in range, if you get real sun for half the year, or if your multivitamin already carries D3. We keep it in the guide because a lower dose is a real buying decision, not a lesser product.

It is also one of the lowest costs per day of anything here, and 180 capsules is six months at one a day. The capsules are small and vegan, labeled Non-GMO and kosher, and free of soy. The compromise is the K2 number: 45 mcg is the lightest dose in this set, less than half of what the 5,000 IU bottles carry. If a robust MK-7 dose is the whole reason you are buying a combo, this is not the bottle. For everyone else, six months of small, cheap, easy capsules is a hard habit to argue with.

Most of the bottles here stop at two ingredients. This one keeps going: 5,000 IU of D3 and 50 mcg of MK-7, plus magnesium, zinc, B6, and MCT powder in the same capsule. The logic is that D3 and K2 work alongside cofactors, and if you have ever priced magnesium and zinc as separate bottles, the appeal is easy to see.

Sixty capsules is two months at one a day, the capsule goes down without fuss, and it is made in cGMP-certified facilities in the U.S. For someone building a supplement routine from scratch, that is a tidy single-capsule answer — one bottle in the cabinet instead of four.

The honest caveat is digestion. This is the formula in this set where nausea and stomach cramping turn up most, and taking it with your largest meal is the first thing to try if you are sensitive. So we recommend it to the person who wants their D3 support bundled and will pay a premium per capsule for the convenience — not to someone who already takes magnesium at night and does not need a second dose of it.

Double the D3 of most of this list and double the K2 of nearly all of it: 10,000 IU and 200 mcg of MK-7 in a single mini softgel, carried in MCT coconut oil. This is not a stronger version of a 5,000 IU bottle that you graduate to for extra credit. It is for a specific situation — a low level, a clinician's high-dose plan, and a follow-up blood test already on the calendar.

For that job we rate it highly. The softgels are mini, which matters when you are swallowing one daily for months, and 300 of them means a correction course does not run out halfway through. Coconut oil is the right carrier for two fat-soluble vitamins, and the pouch is flat enough to live in a drawer rather than colonize a shelf. Even at this strength it lands among the cheaper bottles here per softgel.

The catch is arithmetic. 10,000 IU is more than most adults need outside a supervised course, and 200 mcg of K2 is the highest dose in this set by a wide gap. Without a lab result behind it, you are guessing with a big number. Buy it because the dose was decided, not because a pouch of 300 looks like a bargain.

Four thousand IU is an odd number to print on a supplement label, and it is the first sign this bottle was not designed by a marketing department. The capsules are small, the formula is free of fillers, common allergens, and GMOs, and what struck us in use was how little there was to notice: no aftertaste, no queasiness, nothing to work around. If a daily D3 has ever left your stomach unhappy, this is the bottle in this set to try.

You pay for that restraint, since it is among the priciest bottles here per capsule. The label is quieter than the others, too: the D3 is stated plainly at 4,000 IU and the K2 is named, but the MK-7 amount is not spelled out, so you cannot weigh it against the 100 mcg bottles on this page. That is a real gap if dose transparency is what you shop by, and a non-issue if it is not. What you are buying is a short ingredient list and a capsule that does not announce itself — and for some people that is the difference between taking it daily and leaving the bottle shut.

Three hundred and sixty capsules is a year of D3 and K2 at one a day, and a bottle that size changes the question you are asking. It stops being which brand is cheapest and becomes whether you will still want the same dose next spring. For a household that has already settled that, this is the least fuss and one of the lowest costs per day in this guide.

What we appreciated is how plain the specification is: 5,000 IU of D3 and 90 mcg of MK-7 in a standard capsule, laboratory tested, non-GMO, gluten and soy free, from a company that has been making vitamins since 1960. No cofactor blend, no pouch, no marketing flourish. The 90 mcg of K2 puts it mid-pack here — more than the 45 and 50 mcg bottles, less than the 100 mcg ones.

The thing to weigh is commitment. A year is a long time to be wrong about a dose, and if your clinician moves your target in six months you are looking at a few hundred leftover capsules and a bottle taking up cabinet space. This is the bottle to buy after a blood result has settled the question — not the one to buy while you are still working it out.

Nothing about this bottle is fancy: 5,000 IU of D3, 100 mcg of MK-7, small softgels, non-GMO and gluten free, in a 120-count bottle that runs about four months. It is the plainest specification sheet in this guide, which is a large part of why it works as a starting point.

Our read is that it is the smartest first bottle here. Four months is long enough to find out whether a daily D3 habit sticks, and short enough that you are not stuck with a year of capsules if it does not or if your dose changes. The 5,000 IU and 100 mcg pairing is the same one the premium bottles use, so nothing about the dose or the softgel feels cut-rate — the savings come from the packaging and the quieter label, not from the two vitamins.

The one snag is physical. Softgels in this bottle can arrive fused into a lump, and prising them apart takes patience. It is cosmetic rather than serious, but it is the kind of thing the pricier bottles do not put you through. Buy it for the dose and the low commitment, and expect to loosen a few before you reach the bottom.

The bottle is bigger than the job. Ninety small softgels sit in a container sized for twice that, and the label asks for a fair amount of trust: the K2 is listed at 100 mcg without naming the form, and MK-7 is the form worth looking for.

What you get for the premium is a name you already know and a formula that is hard to argue with: 5,000 IU (125 mcg) of D3 with 100 mcg of K2, small softgels, no synthetic dyes or artificial flavors, gluten free and made in the U.S. with globally sourced ingredients. One a day with water, and we had no trouble getting them down.

Value is where it wobbles. Ninety softgels is three months, and per capsule this is one of the most expensive bottles in this guide — noticeably more per day than the bulk bottles and more than most of the smaller ones. You are paying for shelf presence and recognition, not for a better dose.

So it is for the reader who wants a label they already trust in the cabinet and will pay for the reassurance, or who is standing in a store aisle where the smaller brands are not stocked. Ordering online with an eye on cost, one of the bulk bottles is the better buy. Trusting the name is a real reason to buy — it just is not a free one.