Vitamin D3 and Vitamin K2
K2 directs the calcium that D3 helps absorb into bone rather than soft tissue and arteries.
Vitamin D3
The sunshine vitamin behind bone, immune, and mood health.
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
Vitamin D3
- Dose
- 1,000–4,000 IU per day for most adults
- Timing
- With a meal containing fat for best absorption
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
Buying Vitamin D3 and Vitamin K2?
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Vitamin D3
Vitamin K2
Frequently asked
Can you take Vitamin D3 and Vitamin K2 together?
Yes, they are commonly taken together. K2 directs the calcium that D3 helps absorb into bone rather than soft tissue and arteries.
What's the best time to take Vitamin D3 and Vitamin K2?
Around the same time works well. Vitamin D3: With a meal containing fat for best absorption. Vitamin K2: With a fat-containing meal, often alongside D3.
How do Vitamin D3 and Vitamin K2 interact?
Synergy: Work better together than alone. K2 directs the calcium that D3 helps absorb into bone rather than soft tissue and arteries.
Related pairings
Calcium + Vitamin D3
Vitamin D3 is required to absorb dietary and supplemental calcium.
Magnesium + Vitamin D3
Magnesium is required to convert vitamin D into its active form, so low magnesium blunts D3's benefits.
Boron + Vitamin D3
Boron helps extend the half-life and activity of vitamin D, so the two support bone and mineral metabolism together.
Omega-3 (Fish Oil) + Vitamin D3
Both are fat-soluble and support mood and immunity; taking D3 with fish oil aids absorption.