Disclosure: Some links in this post are affiliate links. As an Amazon Associate I earn from qualifying purchases, at no extra cost to you. Learn more
Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Most people buying a calcium D3 K2 supplement get one thing badly wrong: they chase the biggest IU number on the label. You want a softgel small enough to actually swallow every morning, a dose that matches what your bloodwork needs, and a K2 form your body can use — and those three things rarely live on the same bottle. This guide compares four bottles on dose, K2 form, and softgel size so you can match one to your routine.
This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Below you will find how to read a D3/K2 label without a nutrition degree, a side-by-side table of the four picks, and plain-English reviews of each. The short version: match the D3 IU to your bloodwork, the K2 mcg to your needs, and the softgel to a size you will actually swallow daily.
Top Picks
How To Choose The Best Calcium D3 K2 Supplement
A D3 K2 supplement is two nutrients in one softgel. Vitamin D3 (cholecalciferol) is the form your body makes from sunlight, and it helps your gut pull calcium out of food. Vitamin K2 (often listed as MK-7, or menaquinone-7) is the partner nutrient that helps direct that calcium where you want it. Buyers usually get stuck on one question: how much D3 do I need? The honest answer is that it depends on your own blood levels, which is why the picks below span a wide dose range.
Match the IU to your situation, not to the biggest number
D3 doses in this category run from 2,000 IU up to 10,000 IU per serving. A higher IU is a bigger dose, not a better one, unless your bloodwork calls for it. People with limited sun exposure or a confirmed low reading are often steered toward a higher daily amount, while someone maintaining an already-normal level may only need a modest dose. Get your level checked and let that number, not the bottle, set your target. Most labels here direct you to take the softgel with a meal, because both D3 and K2 are fat-soluble (they need fat in your stomach to absorb well).
Check the K2 form and the mcg beside it
Look for MK-7 on the label rather than a generic “vitamin K.” The number next to it is measured in mcg (micrograms), and it varies a lot between products in this list. A formula with 200 mcg of K2 is delivering a different amount than one with 100 mcg. Both are valid doses; just confirm which mcg you are taking before you compare bottles.
Pinch the softgel before you commit to a bottle
You will take this every day, so size and swallowability decide whether the bottle gets finished or forgotten. A mini softgel goes down with a sip of water; a large capsule can turn a daily habit into a chore. Also look at what oil carries the nutrients — formulas built with coconut oil or sunflower seed oil are designed around fat-soluble absorption, which is why some can be taken with or without food depending on the label. Finally, scan the allergen list and the testing claim. A short allergen list plus a third-party testing claim tells you more about the bottle’s contents than any front-of-label badge.
Side-by-Side Comparison
| Model | Best For | Vitamin D3 | Vitamin K2 | Count | Amazon |
|---|---|---|---|---|---|
| Micro Ingredients Vitamin D3 + K2 MK-7★ Best Overall | Daily maintenance with the longest supply | 5,000 IU | 100 mcg | 300 softgels | Amazon |
| BienRaíz Vitamin D3 K2 10000IU | Higher-dose top-up for a confirmed low level | 10000 IU | 100 mcg (All-Trans MK-7) | 120 softgels | Amazon |
| Vitamin D3 K2 with Coconut Oil (2 Pack) | Households that want a two-bottle supply | 5,000 IU | 200 mcg | 2 bottles, 120 softgels each | Amazon |
| Vital Nutrients Vitamin D3 + K2 2,000 IU | Anyone who needs a gentle, lower dose | 2,000 IU | MK-7 | 60 capsules | Amazon |
Detailed Reviews
1. Micro Ingredients Vitamin D3 + K2 MK-7 300 Softgels
Our pick — 4.5+★ from 31,000+ verified ratings; the strongest balance of quality and price.
A mini softgel that swallows like a jelly bean and keeps going for the better part of a year.
This is the pick that suits most people who want one bottle, one small softgel a day, and no fiddling with a subscription. Each serving gives you 5,000 IU of vitamin D3 plus 100 mcg of vitamin K2 in the MK-7 form, carried in sunflower seed oil — the oil is there so the fat-soluble nutrients absorb properly. The count is the headline for practical buyers: 300 mini softgels is the longest supply in this group. The closest rival, the BienRaíz bottle, holds 120 softgels, so the Micro Ingredients tub lasts far longer before you need to reorder.
The small, smooth capsule is the part that wins people over — it is a softgel rather than a hard tablet, so it glides down with water. Owners also like that they can take it without a full meal thanks to the sunflower seed oil base. The formula is No GMOs, No Dairy, No Soy, No Gluten, with no artificial colors or flavors, and it is 3rd Party Lab Tested for purity and safety. One buyer captured the appeal plainly: “Easy to take, and a great price,” and noted that lab results showed vitamin D back in the normal range after a long stretch of being low.
Where does it fall short? The label print is tiny, so keep the bottle somewhere well lit if you rely on reading the directions each time. And 5,000 IU is a solid maintenance dose — if your level came back very low, the 10,000 IU BienRaíz option exists for exactly that situation. For a normal-to-low reading, though, this is a clean, tested, long-lasting bottle.
What the softgel gets right
- 300 mini softgels — the longest supply of the four picks, so fewer reorders.
- Small, smooth, jelly-like capsule that goes down with water.
- Sunflower seed oil base designed for fat-soluble absorption, and no aftertaste or stomach upset.
- No GMOs, dairy, soy, gluten, or artificial colors and flavors; 3rd Party Lab Tested.
- One softgel covers both D3 and K2, so nothing else to remember.
Where it asks a little of you
- The label print is genuinely small — read it in good light.
- 5,000 IU is a set dose; it is not the higher 10,000 IU strength.
Reach for this if: you want one tested bottle, a tiny daily softgel, and the fewest reorders of the four.
Think twice if: your bloodwork called for a much higher dose — the 10,000 IU option is built for that.
2. BienRaíz Vitamin D3 K2 10000IU 120 Softgels
The double-strength bottle for the person whose numbers came back low and wants to climb faster.
Here is the trade in plain numbers. BienRaíz delivers 10,000 IU of D3 per dose, double the 5,000 IU in the Micro Ingredients bottle, and it pairs that with 100 mcg of All-Trans MK-7. The brand pitches this strength for adults with a confirmed deficiency, limited sun exposure, higher body weight, or absorption issues. In other words, it is a top-up bottle, not a starting point by default — and the label itself advises checking with your healthcare provider on whether this potency fits you.
The catch is the supply length. At 120 softgels this is a four-month bottle, and it weighs 2.4 ounces — noticeably lighter in the hand than the beefy 7.37-ounce two-pack below, which mirrors the smaller capsule count. That is fine if you only want to test a higher strength before committing to a bigger jar. The formula is GMP-made with third-party verification across at least three independent labs and 30+ tests, and it is free of gluten, dairy, soy, eggs, peanuts, tree nuts, yeast, and lactose.
Why the strength matters: 10,000 IU is the highest D3 dose in this lineup — a match for a confirmed low reading rather than routine topping-up.
What the bottle leaves out: no gluten, dairy, soy, eggs, peanuts, tree nuts, yeast, or lactose, and no artificial flavors, colors, or sweeteners.
Pick this when: a blood test told you your D3 is running low and you want a double-strength softgel from a lab-verified bottle.
Hold off when: your level is already normal — the 5,000 IU picks suit maintenance better.
3. Vitamin D3 K2 Supplement 5000 IU 2 Pack
Two bottles of coconut-oil softgels at the highest K2 strength on this page.
This one leads with a number the others do not touch: 200 mcg of K2 MK-7. That is double the 100 mcg in the Micro Ingredients and BienRaíz bottles, paired with 5,000 IU of D3. The nutrients ride in coconut oil, which is a fat-soluble carrier — this is the “with Coconut Oil” in the name, and it is there for the same absorption reason the other formulas use their own oils. Each softgel is a small, easy-swallow design, and the two-pack means a household can stock up at once.
The quality read is broadly positive. What people praise most is the overall quality, with the easy-swallow capsule and the value of a multi-bottle pack following close behind. Improvements after steady use are a common thread — better energy, better labs, and a gentle feel on the stomach even when taken without food. The supplement is described as plant-based, and the formula is presented as bone, teeth, muscle, and immune support built around D3 plus K2. One buyer put the routine simply: “Good addition to my daily routine” — convenient bottle, easy to take.
Honesty time: the ingredient content is the aspect that draws the most mixed reaction, so if you are picky about the exact carrier or want a label with fewer extras, read the supplement facts carefully before you buy. It also runs the heaviest of the four at 7.37 ounces for the two-pack, which is the physical weight of two full bottles on your shelf. But for a couple who both take D3, or anyone who does not want to reorder every few months, the doubled K2 and twin-pack make a strong case.
The K2 advantage: 200 mcg of MK-7 — twice the K2 of the 100 mcg bottles at the top of this list.
The honest caveat: ingredient content is the murkiest part of the reviews here; scan the full supplement facts if you are particular about what is in the carrier oil.
Fits best when: you want a two-bottle household supply and the highest K2 dose in this group.
Look elsewhere when: you want a single bottle to test first, or a smaller jar for travel.
4. Vital Nutrients Vitamin D3 + K2 2,000 IU, 60 Capsules
The gentle 2,000 IU option for anyone who needs a smaller daily dose, not a bigger one.
Not everyone wants the strongest capsule on the shelf. If your bloodwork sits near normal and you just need a modest daily top-up, this is the bottle built for that. Vital Nutrients pairs 2,000 IU of D3 (in the cholecalciferol form) with MK-7 vitamin K2, and it uses the more readily absorbed forms of both nutrients. It is the smallest daily dose of the four, and the 60-capsule bottle is the most compact — easy to tuck in a drawer or a travel bag.
Reviewers here focus on health benefits first, then value and swallowability. Pair that with a reasonable value read and a capsule easy enough to swallow that it disappears with a sip. Ingredient transparency is a repeated plus, with people liking that the label keeps the formula clean and the two key nutrients sit in one capsule. The formula is free of gluten, dairy, peanut, tree nut, fish, shellfish, soy, sesame, and egg, is Non-GMO, and is made without artificial fillers, coatings, binders, or colors. It is manufactured in an NSF-certified facility, with third-party lab testing of raw ingredients and finished products.
One thing worth knowing: this is a modest dose by design, so if you need to push your level up fast, it will not do it in one capsule the way a 10,000 IU softgel might. And at 60 capsules it is the shortest supply in the group. For a routine where a doctor has steered you toward a lower daily amount though, the clean label, verified testing, and easy swallow make it the calm, sensible choice — the company was founded by practitioners, and it shows in the no-frills formula.
Why it earns its place
- 2,000 IU is the lowest, gentlest daily dose of the four — ideal for a normal-range level.
- MK-7 K2 plus D3 in the more readily absorbed forms, in one capsule.
- Free of gluten, dairy, peanut, tree nut, fish, shellfish, soy, sesame, and egg; Non-GMO.
- Made in an NSF-certified facility with third-party lab testing.
What to weigh
- 2,000 IU will not lift a very low level quickly — it is a maintenance-style dose.
- 60 capsules is the shortest supply of the four.
Reach for this if: you want a lower, practitioner-friendly dose with a spotless allergen list.
Skip the strength jump if: your level is far below normal — the higher-dose bottles suit that better.
Know the Specs
Vitamin D3 in IU
IU stands for International Unit, a way of measuring how much vitamin D is in a softgel. In this group it runs from 2,000 IU to 10,000 IU per serving. The number is a dose, not a quality score — you match it to your bloodwork rather than picking the biggest. Both forms listed here, cholecalciferol and D3, are the same sunshine-form nutrient, and it absorbs best with a little fat in your stomach.
Vitamin K2 in mcg, and the MK-7 part
K2 is measured in mcg (micrograms), and the best-known form is MK-7, short for menaquinone-7. Here the K2 amount ranges from 100 mcg up to 200 mcg. K2 is the partner that helps steer calcium toward bone instead of letting it settle where it should not. When a label says All-Trans MK-7, it is naming the specific molecular shape of the K2; when a label just says MK-7, that is still the form you are looking for.
Counting capsules and supply length
Count tells you how long a bottle lasts at one softgel a day. 300 softgels runs roughly ten months, 120 softgels covers about four months, and 60 capsules is about two. The two-pack here multiplies your total by two. Buy the count that matches how often you want to think about reordering, not just the lowest label number.
Oil carrier and swallow size
D3 and K2 are fat-soluble, meaning they need fat to absorb well, so many formulas carry them in an oil such as coconut oil or sunflower seed oil. That carrier is a real part of how the softgel works. Capsule size is the other daily factor — a small softgel goes down easily with water, while a large hard capsule can make a routine feel like work. Take the softgel with a meal unless the label says otherwise.
Common Questions
Should a Calcium D3 K2 supplement contain actual calcium too?
Is 10,000 IU of D3 too much for everyday use?
What is the difference between MK-7 and plain vitamin K?
Do I take a D3 K2 softgel with food?
How long does a bottle of D3 K2 last?
Are these D3 K2 softgels gluten free and allergen friendly?
What does third-party lab tested mean on a D3 K2 label?
Can I take a 5,000 IU D3 K2 supplement if my level is already normal?
Why does the K2 mcg vary so much between these bottles?
Do these D3 K2 capsules come in a size easy to swallow?
The Bottom Line
For most people, the calcium d3 k2 supplement to start with is the Micro Ingredients Vitamin D3 + K2 MK-7, because it pairs a tested 5,000 IU dose and 100 mcg of MK-7 with a tiny softgel and the longest 300-softgel supply of the four. If a blood test put you in the low range and you want a double-strength bottle, the BienRaíz 10,000 IU is the one built for that. Want the highest K2 and a two-bottle stock for the household? Grab the Coconut Oil two-pack. And for a gentle, lower-dose, spotless-label daily, the Vital Nutrients 2,000 IU fits the bill — the whole lineup holds strong scores, so the real decision is dose and supply length, not which bottle is “best.”
How we choose
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of October 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, Aappliancez earns from qualifying purchases. This does not affect which products we feature.