Vitamin D gets all the attention — but it has a partner that helps it do its job. Here's the quick guide to why we pair vitamin K2 with D3 in one capsule.
Key takeaways
- D3 helps your body absorb calcium; K2 (as MK-7) helps direct that calcium toward your bones, where you want it.
- Vitamin D needs vary: NIH sets the adult RDA at 600–800 IU a day, with an upper limit of 4,000 IU from all sources, and the adequate intake for vitamin K is 90–120 mcg a day — a blood test is the most reliable way to know your D3 status specifically.
- K2 as MK-7 lasts longer in the blood than MK-4, so one daily dose covers the day.
- Both vitamins are fat-soluble; the label directs one capsule daily, preferably 20–30 minutes before a meal.
- If you take a blood thinner, ask your doctor before starting: vitamin K affects blood clotting and can interact with these medicines.
Why vitamin D3 and K2
D3 helps your body absorb calcium; K2 (as MK-7) helps direct that calcium toward your bones, where you want it. Together they support bone health and healthy calcium use, plus everyday immune support — quiet foundations that matter more as we get older.
Third-party tested every batch, manufactured in the USA with globally sourced materials.
Learn more: Vitamin K2/D3+ — third-party tested, every batch. Want the details? Read Why Vitamin K2 and D3 Work Better Together.
How Much D3 and K2 Do You Actually Need?
Vitamin D needs vary: NIH sets the adult RDA at 600–800 IU a day, and the adequate intake for vitamin K is 90–120 mcg a day — a blood test is the most reliable way to know your D3 status specifically. One Vitamin K2/D3+ capsule gives 125 mcg (5,000 IU) of vitamin D3. That is above the 100 mcg (4,000 IU) daily upper limit set for adults by the NIH Office of Dietary Supplements. Talk with your healthcare provider before use, and about your total vitamin D from all sources.
Why MK-7 Instead of MK-4?
MK-7 stays active in the bloodstream longer than MK-4, supporting calcium use through the day from a single dose rather than requiring multiple doses.
Who Should Talk to a Doctor Before Taking K2?
Anyone on blood-thinning medication should check with their doctor first, since vitamin K plays a role in blood clotting and can interact with those medications.
The short version, written out
If you would rather read than watch, here are the three points that matter. First, vitamin D3 is the absorber: it helps your body take calcium in from food. Second, vitamin K2 is the other half of the pair, which is why the two belong in one capsule rather than two bottles. Third, the label directs one capsule daily, preferably 20–30 minutes before a meal, which is why tying it to breakfast or lunch is the easiest habit. The form of K2 matters too: MK-7 stays active longer than MK-4, so one daily capsule covers the day. As with any fat-soluble vitamin, follow the label rather than adding extra, and ask your doctor before starting if you take blood thinners.
Frequently asked questions about vitamin K2 and D3
What does the video explain?
It walks through the label itself: 125 mcg of vitamin D3, 100 mcg of vitamin K2 as MK-7, 210 mg of calcium and 5 mg of black pepper extract for absorption — four ingredients, four amounts, and why the D3 and the K2 sit in one capsule instead of two bottles.
Should I take Vitamin K2/D3+ with food?
The label directs one capsule daily, preferably 20–30 minutes before a meal, or as directed by your healthcare professional. Breakfast or lunch is the easiest anchor.
Can I take it if I already get sun?
Sun exposure supports vitamin D but varies a lot by season, skin and latitude, and it supplies no K2. A blood test is the only way to know your D level for certain.
Is one capsule a day enough?
Vitamin K2/D3+ is one capsule per serving, taken once daily, with the D3 and K2 amounts shown on the label. Sixty capsules is a sixty day supply. Follow the label directions and ask your doctor before taking more.
Does it pair with magnesium?
Yes. Magnesium is involved in activating vitamin D, so an evening Magnesium Glycinate+ alongside a morning K2/D3 is a common foundation.
Sources
- NIH Office of Dietary Supplements: Vitamin D, Fact Sheet for Health Professionals
- NIH Office of Dietary Supplements: Vitamin K, Fact Sheet for Health Professionals
- NIH Office of Dietary Supplements: Magnesium, Fact Sheet for Health Professionals
Individual results vary.
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.
