Bone · Immune†
Vitamin D3 + K2 (MK-7)
- Vitamin D supports normal bones and immune function.†
- 5,000 IU Vitamin D3
- 100 mcg Vitamin K2 (MK-7)
Ships from Sparta, NJ within 1 business day · Standard 2–5 days (free $75+) · Priority 1–3 days $11.95
- Made in USA
- cGMP facility
- Every dose disclosed
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Key ingredients
125mcg
Vitamin D3
Vitamin D helps the body absorb calcium and supports normal bones and immune function.†
100mcg
Vitamin K2
Vitamin K is needed to activate osteocalcin, a bone protein, and the proteins of normal blood clotting.†
Supplement Facts
Serving size: 1 Vegetarian Capsule
Servings per container: 60
| Amount per serving | Amount | % DV |
|---|---|---|
| Vitamin D3 (as cholecalciferol) | 125 mcg (5,000 IU) | 625% |
| Vitamin K2 (as menaquinone-7) (vitaMK7®) | 100 mcg | ‡ |
‡Daily Value not established.
Other ingredients: Organic rice hull extract, vegetarian capsule (modified cellulose, water).
Dietary
Free from
Dairy, wheat, gluten, eggs, peanuts, soy, tree nuts, fish, shellfish, sesame, preservatives, artificial colors, artificial flavors.
Manufacturing
Made with globally sourced ingredients in an NPA GMP-certified, third-party audited, FDA-registered cGMP facility.
Cautions
If you take a vitamin K antagonist such as warfarin, consult your doctor before use. Vitamin K can change how these medications work.
Provides 125 mcg (5,000 IU) of vitamin D, above the 100 mcg (4,000 IU) daily upper limit for adults. Count any other vitamin D you take and ask your healthcare provider about testing your level.
If you are pregnant or nursing, take medication (including statins, steroids, thiazide diuretics or orlistat), or have a medical condition, consult a healthcare professional before use.
Stop taking it and talk to a healthcare professional if you notice any adverse reaction.
Keep out of reach of children.
How to use
- Serving
- 1 vegetarian capsule
- Count
- 60 capsules
- When
- Once a day
- Supply
- 60 days
Adults: take one vegetarian capsule a day, or as directed by a healthcare professional. If you take warfarin or another vitamin K antagonist, talk to your doctor before use. This capsule provides 5,000 IU of vitamin D, which is above the 4,000 IU daily upper limit for adults, so check with your healthcare provider about your vitamin D level and any other vitamin D you take. Store in a cool, dry place away from direct light.
Who it's for
- Adults whose healthcare provider recommends a higher vitamin D intake
- Anyone who gets little sun
- One capsule a day instead of two products
- Vegetarian and gluten-free diets
Not recommended for
- Anyone on warfarin or another vitamin K antagonist, without their doctor's approval
- Anyone already taking another vitamin D supplement, without checking the total
- Children; this is an adult dose
- Vegans who avoid animal-derived vitamin D3; check the source with us first
FAQ
Is 5,000 IU too much?
It is above the 4,000 IU (100 mcg) daily upper limit the National Academies set for adults, the highest daily intake considered unlikely to cause harm for almost everyone. Some people need more under medical supervision, usually after a blood test shows a low level. Ask your healthcare provider to check your 25-hydroxyvitamin D and count any vitamin D from other supplements.
Why take D3 and K2 together?
Vitamin D helps you absorb calcium, and vitamin K activates osteocalcin, a protein that binds calcium in bone.† Taking them together covers both in one capsule.
Why MK-7 instead of K1?
MK-7 stays in the blood for days rather than hours, so daily doses build up to steadier levels. In a comparison study, MK-7 also activated osteocalcin more completely than K1.
I take warfarin. Can I use this?
Only with your doctor's approval. Vitamin K affects how warfarin works, and studies suggest 50 mcg a day or more of MK-7 can make a meaningful difference. This capsule has 100 mcg.
Should I take it with food?
The label does not specify, so take it whenever you will remember it each day.
Is it vegan?
The capsule is vegetarian. The label does not say vegan, and vitamin D3 is often made from lanolin from sheep's wool, so ask us before buying if you avoid all animal-derived ingredients.
Does more vitamin D mean better results?
Not if you already have enough. In the large VITAL trial, vitamin D supplements did not change bone outcomes in generally healthy adults who were not low in vitamin D. Vitamin D supports normal bones;† a blood test tells you whether you need more.
Where and how is it made?
In the USA, with globally sourced ingredients, in an NPA GMP-certified, third-party audited, FDA-registered facility that follows FDA's cGMP rules for dietary supplements (21 CFR Part 111).
Can I take it with other MAXIS products?
Yes. It pairs with Ultra Omega-3, Creatine and Clear Fiber, which contain no vitamin D or K. Count any vitamin D from a multivitamin or other supplement.
Who should check with a doctor first?
Anyone pregnant or nursing, taking warfarin or another vitamin K antagonist, statins, steroids, thiazide diuretics or orlistat, or managing a medical condition.
Can I use it if I compete in a tested sport?
This product does not carry a banned-substance certification such as NSF Certified for Sport or Informed Sport. If you compete under anti-doping rules, check with your governing body before using any supplement.
What research is behind the ingredients?
-
Researchers compared synthetic vitamin K1 with MK-7 from natto in healthy volunteers. MK-7 had a much longer half-life, gave more stable blood levels and built up 7 to 8 times higher with daily intake, and it activated osteocalcin more completely. The authors also warned that 50 mcg a day or more of MK-7 may meaningfully interfere with oral anticoagulants.
Schurgers LJ, Teunissen KJF, Hamulyak K, Knapen MHJ, Vik H, Vermeer C. Vitamin K-containing dietary supplements: comparison of synthetic vitamin K1 and natto-derived menaquinone-7. Blood. 2007;109(8):3279–3283. Source (opens in a new tab)
-
In VITAL, a large randomized trial of generally healthy midlife and older adults who were not selected for low vitamin D, vitamin D supplements did not change bone outcomes compared with placebo. Vitamin D still matters for normal bones;† the trial suggests extra vitamin D adds nothing for people who already have enough.
LeBoff MS, Chou SH, Ratliff KA, et al. N Engl J Med. 2022;387(4):299–309. Source (opens in a new tab)
Research describes the ingredients, not this finished product. It is not a claim that this product diagnoses, treats, cures or prevents any disease.
Pairs well with
Ultra Omega-3 (EPA + DHA)
Another daily basic this formula does not include.
$44.99 · $0.74/serving
Micronized Creatine Monohydrate
Creatine for training; D3 + K2 as the daily base.
$42.99 · $0.42/serving
SunFiber® PHGG Soluble Clear Fiber
Soluble fiber for the rest of the daily routine.
$36.99 · $1.05/serving†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.
vitaMK7® is a registered trademark of Gnosis S.p.A.
The MAXIS Journal
Read the research
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