BioStacks
GNC

Coral Calcium 400 mg

2 Capsules · 30 servings

iHerbAmazon
Track this supplement · Get started free

What it does

A combination of 3 label ingredients.

Calcium

Form not confirmedGrade —

Supports the maintenance of normal bones and teeth, muscle function and nerve signaling.

Vitamin D

cholecalciferolPremium

cholecalciferol: Supports normal bones; D3 generally raises vitamin D blood levels more than comparable D2 doses.

DentalBone & Joint
Ask AI about this product

Ingredients (4)

IngredientDoseTarget/referenceForm

Other ingredients

Titanium DioxideColorant

Banned in the EU (2022) over concerns that its ultra-fine particles may damage DNA in gut cells. Still allowed in the US. Used only for white coloring — provides no health benefit.

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

Lab testing

How to take it

With a meal containing fat
Keep it away from high-oxalate foods like spinach
Space it a couple of hours from Iron and Zinc

On the label

As a dietary supplement, take two capsules daily.

Price check

$26.99

$0.90 / serving

$10$20$50

Pricier than 73% of 294 calcium supplements

Similar products

Vitamin D3 4000

ProCaps

Vitamin D3 4000

🛡️ for Immune

93
Magnesium, Calcium + D3

Swisse

Magnesium, Calcium + D3

🦷 for Dental

93
Vitamin D3 5000

ProCaps

Vitamin D3 5000

🛡️ for Immune

85
Vitamin D3 3000

ProCaps

Vitamin D3 3000

🛡️ for Immune

79
Red Marine Algae 1600 mg

Carlyle

Red Marine Algae 1600 mg

🦷 for Dental

76

Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

Not medical advice. Consult your healthcare professional.

BioStacks

Know exactly what's in your supplements.

Navigate

  • Home
  • Manifesto
  • App Store
  • Google Play

Resources

  • Contact & Support
  • Pricing
  • Terms of Service
  • Privacy Policy
  • Refund Policy

Explore

  • Health Areas
  • Best Supplements
  • Nutrients
  • All Supplements

Popular Picks

  • Best Magnesium for Sleep
  • Best Collagen for Skin
  • Best Creatine for Muscle
  • Best Vitamin D for Bone Health
  • Best Probiotics for Digestion
  • Best CoQ10 for Heart

Free Tools

  • Interaction Checker
  • Dose Checker
  • Form Comparison

Field Guides

  • Magnesium for sleep
  • Reading labels
  • Interaction checker
  • Dose checker
  • Harmful ingredients
  • Proprietary blends
  • Stack building
  • Scan without barcode
  • All guides →
© 2026 BioStacks. All rights reserved. Not medical advice.