Calcium Citrate + Vitamin D3 (Calcidiol)
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 Citrate → Vitamin D3 (Calcidiol)
D3 increases intestinal calcium absorption · level ASide by side
| Calcium Citrate | Vitamin D3 (Calcidiol) | |
|---|---|---|
| Bioavailability | 90% | 95% |
| Elemental mineral | 24.1% | —% |
| Cost per 100 mg absorbed | $0.36 | $22456.14 |
| Safety rating | 7/10 | 6/10 |
| Cost per month | $20 | $80 |
| Daily dose | 500-1200 mg | 5-20 mcg (medical supervision) |
| Best timing | Divided doses between meals | With fat containing meal |
| Evidence level | A | B |
How this score was built
- Baseline for any untested pair: 70
- +12 — synergy at evidence level A
- = 82 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 Citrate and Vitamin D3 (Calcidiol) together?
Compatible. Timing differs, so follow each supplement's own window. The pair scores 82 out of 100, based on 1 documented interaction records.
What should you not take with Calcium Citrate?
Nothing in this pairing clashes. Its own page lists everything Calcium Citrate is documented to conflict with.
When should you take Calcium Citrate and Vitamin D3 (Calcidiol)?
Calcium Citrate: Divided doses between meals. Vitamin D3 (Calcidiol): With fat containing meal. The same window works for both.