Calcium + Vitamin K1 (Phylloquinone)
Compatible. Timing differs, so follow each supplement's own window.
0
compatibility
0
synergies
0
conflicts
Verdict
78
out of 100
Works better together
Compatible. Timing differs, so follow each supplement's own window.
Timing plan
Can be taken together
Calcium
Divided doses with meals
1,000-1,200 mg
Vitamin K1 (Phylloquinone)
With fat meal
90-120 mcg
Nothing blocks them — the same window is what produces the synergy below.
What helps
+
Both involved in bone protein function
Vitamin K1 (Phylloquinone) → Calcium
Complementary roles in bone matrix formation · level BSide by side
| Calcium | Vitamin K1 (Phylloquinone) | |
|---|---|---|
| Bioavailability | 30% | 80% |
| Safety rating | 8/10 | 9/10 |
| Cost per month | $20 | $8 |
| Daily dose | 1,000-1,200 mg | 90-120 mcg |
| Best timing | Divided doses with meals | With fat meal |
| Evidence level | A | A |
How this score was built
- Baseline for any untested pair: 70
- +8 — synergy at evidence level B
- = 78 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 K1 (Phylloquinone) together?
Compatible. Timing differs, so follow each supplement's own window. The pair scores 78 out of 100, based on 1 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 K1 (Phylloquinone)?
Calcium: Divided doses with meals. Vitamin K1 (Phylloquinone): With fat meal. The same window works for both.