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Compound Profile
Calcium
Supports bone mineral density; modest fracture prevention.
Use extra caution — Excess may increase kidney stone risk. Details
Last reviewed: •2 sources citedReport a correctionProfile-wide ·D Preliminary
At a glance
From this profile's structured data- Evidence
- Grade D
- Safety
- Excess may increase kidney stone risk.
- Profile context
- bone mineralization, calcium signaling
Quick stats
- Evidence level
- Preliminary evidence
- Typical onset
- Varies by prep
- Safety rating
- Use extra caution: Use caution
- Best for
- Bone Mineralization, Calcium Signaling
- Avoid / review if
- Hypercalcemia Or Other Conditions Causing Chronically Elevated Blood Calcium Levels, History Of Calcium Containing Kidney Stones, Avoid Exceeding The 2500 Mg Per Day Tolerable Upper Intake Level.
Safety
Safety & Cautions
Excess may increase kidney stone risk.
High caution
Caution level: High. Multiple caution categories apply, or the record uses avoid/contraindication language.
- Interaction-AwareMedication or interaction context is explicitly noted.
- Hormonal Activity ContextHormone-adjacent wording is present and should be interpreted carefully.
Evidence Summary
Profile-wide ·D PreliminaryEvidence lens
Early signal that needs stronger human replication before practical claims.
PreliminaryPreliminary evidence
Human clinical evidence: Present in source signals
Mechanistic / preclinical: Mechanism mapped — Vascular Function Support · Liver Detoxification
Research maturity: Preliminary research — Early findings are not treated as established consumer benefit.
Safety boundary: Safety note available — Excess may increase kidney stone risk.
This profile cites 2 human studies.
Evidence Strength
Confidence estimate based on the design quality and consistency of published clinical trials.
Calcium has a preliminary evidence rating.
General wellnessGeneral wellness
Citation density
1.0
Sources
2
Effects
2
Research recency
Mixed recency
Evidence Grade
Grade D: Preliminary / Theoretical Evidence
Evaluation of methodological rigor, population reach, and evidence alignment.
- Design Match
- Meta analysis
- Risk of Bias
- Low
- Consistency
- Not assessed
Strongest recorded design is a meta analysis, drawn from 3 recorded studies, 2 in people.
How evidence grades work
Each grade reflects the strength and consistency of published human evidence — not marketing claims. Grades are based on study count, design quality, effect size, consistency, and recency.
- Strong
- Multiple RCTs, consistent direction, adequate effect size
- Moderate
- Some RCTs or consistent observational data in humans
- Preliminary / Mixed
- Animal or in-vitro only, or conflicting human data
- Traditional / Theoretical
- Traditional use only; no controlled human trials
Clinical Study Summaries (2)1 human evidence source · 0 human trials · Participant totals not consistently reported · Consistency not yet classifiable
Filter by study class
Showing 2 of 2 studies.
What the evidence actually shows
This table contains 2 structured sources, including 1 human evidence source; 0 are human trials.
| Study | Design | N | Dose | Duration | Population | Outcome | Result & magnitude | Source |
|---|---|---|---|---|---|---|---|---|
Vitamin D and Calcium for the Prevention of Fracture: A Systematic Review and Meta-analysis PubMed · JAMA Netw Open · 2019 Background | Meta-analysis Statistically combines results from multiple eligible studies; confidence still depends on the quality, consistency, and directness of those studies. | — | — | — | — | — | — | PubMed → |
Background | Other / unclear The study design is not yet classified clearly enough to infer its place in the evidence hierarchy. | — | — | — | — | — | — | Source → |
How Calcium Works
Simplified mechanism pathway based on preclinical and pharmacological evidence. Does not confirm clinical efficacy.
Mechanism Pathway — How Calcium Works
CompoundTarget / ReceptorMechanismEffect / Outcome
Dosing
- Common form
- chelated mineral capsule or powder
- No standardized dose
- Our source data records the usual product form for this ingredient but no studied dose. Preparations differ widely, so follow the standardization on the product you actually have and speak to a clinician before starting.
Mechanisms & biological pathways
Preclinical mechanism details from scientific profiles; these represent plausible pathways but do not guarantee clinical efficacy in humans.
- Vascular Function Support
- Liver Detoxification
Guides that use Calcium
Condition guides
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Compare & Sourcing
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Tradeoffs
Free safety checklist
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Safety first · Harm reduction
This information is educational and not medical advice. Start low, avoid risky combinations, and consult a licensed clinician before making health decisions—especially if you use medications, have diagnosed conditions, or are pregnant/breastfeeding.
Learn how we evaluate confidence, safety, and intensity on the methodology page.
Editorial Review
Checked against primary sources, cited evidence, and contraindication language before publication. Evidence claims, safety language, and affiliate modules are reviewed independently. Not personal medical advice.
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