Vitamin D3 + Vitamin K2 (MK-7)
Compatible. Timing differs, so follow each supplement's own window.
Verdict
Timing plan
Can be taken togetherNothing blocks them — the same window is what produces the synergy below.
What helps
Vitamin D3 → Vitamin K2 (MK-7)
Activates matrix Gla protein and osteocalcin · level BVitamin K2 (MK-7) → Vitamin D3
Complementary calcium metabolism pathways · level ASide by side
| Vitamin D3 | Vitamin K2 (MK-7) | |
|---|---|---|
| Bioavailability | 85% | 80% |
| Safety rating | 9/10 | 9/10 |
| Cost per month | $8 | $25 |
| Daily dose | 1000-2000 IU | 100-200 mcg |
| Best timing | Morning with fat | With fat meal |
| Evidence level | A | B |
How this score was built
- Baseline for any untested pair: 70
- +8 — synergy at evidence level B
- +12 — synergy at evidence level A
- = 90 out of 100
Where to buy
Buying both? Check the timing plan above so they do not cancel each other out.
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Common questions
Can you take Vitamin D3 and Vitamin K2 (MK-7) together?
Compatible. Timing differs, so follow each supplement's own window. The pair scores 90 out of 100, based on 2 documented interaction records.
What should you not take with Vitamin D3?
Nothing in this pairing clashes. Its own page lists everything Vitamin D3 is documented to conflict with.
When should you take Vitamin D3 and Vitamin K2 (MK-7)?
Vitamin D3: Morning with fat. Vitamin K2 (MK-7): With fat meal. The same window works for both.