Everything DoseRank tracks on the coral calcium shelf — Calcium Carbonate. The category itself is never ranked: 18 products get scored the moment you say what you want them to do.
How to read the scores
This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →
Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.
A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.
Questions
Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value — computed for the goal you picked, across this category's products. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.
Start with a goal, not a brand
Browsing coral calcium supplements without a goal makes no sense — different products do different jobs, and “best” flips depending on which job you're hiring for. These are the 32 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Gastroesophageal reflux or heartburnReflux symptoms causing burning or discomfort.17 rankedStrong
Bone mineral densityMeasure of bone strength and mineralization.17 rankedStrong
All-cause mortalityDeath from any cause; lowest-level hard clinical outcome.11 rankedModerate-strong
Fracture riskLikelihood of bone fracture.18 rankedStrong
Magnesium statusBiochemical sufficiency of magnesium.13 rankedStrong
Calcium statusAdequacy of calcium availability or stores.18 rankedStrong
Fall riskLikelihood of falling due to instability or weakness.13 rankedModerate-strong
Vitamin D statusBiochemical sufficiency of vitamin D.13 rankedStrong
Migraine severityFrequency, duration, or intensity of migraine episodes.13 rankedModerate-strong
Pregnancy complicationsAdverse maternal or fetal events during pregnancy.5 rankedStrong
Blood pressureArterial pressure; direction of benefit depends on baseline status.16 rankedStrong
Muscle crampsPainful involuntary muscle contractions.13 rankedLimited
Electrolyte balancePhysiologic balance of sodium, potassium, and related ions.1 rankedModerate-strong
Zinc statusBiochemical sufficiency of zinc.2 rankedStrong
Selenium statusBiochemical sufficiency of selenium.1 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best coral calcium supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 18 products against that goal's trials.