Calcium and Vitamin K2
K2 activates the proteins that bind dietary calcium into the bone matrix.
Calcium
The primary structural mineral of bones and teeth.
Vitamin K2
The traffic controller that routes calcium to your bones.
Great to combine
These two are frequently stacked together; they complement each other and are commonly taken at the same time.
How to take them
Calcium
- Dose
- 500–1,000 mg per day from supplements, only to fill dietary gaps
- Timing
- Citrate any time; carbonate with food. Split doses above 500 mg.
Vitamin K2
- Dose
- 90–180 mcg per day (MK-7) or 45–90 mg per day (MK-4)
- Timing
- With a fat-containing meal, often alongside D3
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Frequently asked
Can you take Calcium and Vitamin K2 together?
Yes, they are commonly taken together. K2 activates the proteins that bind dietary calcium into the bone matrix.
What's the best time to take Calcium and Vitamin K2?
Around the same time works well. Calcium: Citrate any time; carbonate with food. Split doses above 500 mg.. Vitamin K2: With a fat-containing meal, often alongside D3.
How do Calcium and Vitamin K2 interact?
Synergy: Work better together than alone. K2 activates the proteins that bind dietary calcium into the bone matrix.
Related pairings
Calcium + Vitamin D3
Vitamin D3 is required to absorb dietary and supplemental calcium.
Boron + Calcium
Boron influences how the body retains and uses calcium, supporting bone mineralization.
Calcium + Iron
Calcium taken at the same time inhibits iron absorption; separate them by at least two hours.
Calcium + Magnesium
Compete for absorption at very high single doses; keep intake balanced rather than mega-dosing one.