Everything DoseRank tracks on the calcium shelf — Strontium Citrate, Vitamin D3 (Cholecalciferol) and Sodium. The category itself is never ranked: 606 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 calcium supplements without a goal makes no sense — strontium citrate, vitamin d3 (cholecalciferol) and sodium do different jobs, and “best” flips depending on which job you're hiring for. These are the 45 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Bone mineral densityMeasure of bone strength and mineralization.465 rankedStrong
Gastroesophageal reflux or heartburnReflux symptoms causing burning or discomfort.253 rankedStrong
Kidney stone riskLikelihood of nephrolithiasis formation or recurrence.514 rankedModerate-strong
Fracture riskLikelihood of bone fracture.500 rankedStrong
Magnesium statusBiochemical sufficiency of magnesium.291 rankedStrong
All-cause mortalityDeath from any cause; lowest-level hard clinical outcome.285 rankedModerate-strong
Calcium statusAdequacy of calcium availability or stores.501 rankedStrong
Vitamin D statusBiochemical sufficiency of vitamin D.366 rankedStrong
Fall riskLikelihood of falling due to instability or weakness.335 rankedModerate-strong
Bone turnover markersBiochemical indicators of bone formation and resorption.405 rankedStrong
Muscle crampsPainful involuntary muscle contractions.335 rankedModerate-strong
Migraine severityFrequency, duration, or intensity of migraine episodes.287 rankedStrong
Vitamin K statusBiochemical sufficiency of vitamin K.84 rankedStrong
Free testosteroneBiologically active unbound testosterone fraction.64 rankedLimited
Pregnancy complicationsAdverse maternal or fetal events during pregnancy.135 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best calcium supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 606 products against that goal's trials.