Calcium + Vitamin K2 (MK-4)
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
Calcium → Vitamin K2 (MK-4)
K2 activates osteocalcin and matrix Gla protein for proper calcium utilization · level BVitamin K2 (MK-4) → Calcium
Activates proteins that bind and direct calcium · level ASide by side
| Calcium | Vitamin K2 (MK-4) | |
|---|---|---|
| Bioavailability | 30% | 60% |
| Safety rating | 8/10 | 9/10 |
| Cost per month | $20 | $35 |
| Daily dose | 1,000-1,200 mg | 15-45 mg (divided doses) |
| Best timing | Divided doses with meals | Multiple doses with fat |
| 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 Calcium and Vitamin K2 (MK-4) 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 Calcium?
Nothing in this pairing clashes. Its own page lists everything Calcium is documented to conflict with.
When should you take Calcium and Vitamin K2 (MK-4)?
Calcium: Divided doses with meals. Vitamin K2 (MK-4): Multiple doses with fat. The same window works for both.