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Coral Calcium 600 mg

Source Naturals
4.8
★ ★ ★ ★ ★
(508 ratings)
Calcium 420 mg
Vitamin D 400 IU
Product Image
Score73
Moderate elemental calcium and vitamin D3 provide simple bone support, but coral sourcing does not add a clear functional advantage. The dual coral-material and elemental-calcium figures may also confuse dose comparisons.
How scoring works
Quantity:120 Tablet(s) • (60 servings)
Goals:

Score 73

Moderate elemental calcium and vitamin D3 provide simple bone support, but coral sourcing does not add a clear functional advantage. The dual coral-material and elemental-calcium figures may also confuse dose comparisons.
How scoring works

Also available as

1 option
60 servings Calcium 420 mg • 120 Capsule(s) • 60 servings $18.46 ($0.30 per serving)
$18.19($0.30 per serving)
iHerb
$ 18.19
iHerb
$ 18.19
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Analysis

The two-tablet serving supplies 420 mg of elemental calcium from 1.2 g of coral calcium material, plus 400 IU of vitamin D3. The elemental amount is the relevant figure for intake and is moderate enough to complement food.

Coral calcium does not provide a stated absorption advantage over citrate, and the raw material weight may be mistaken for the usable calcium amount. Vitamin D3 is clearly identified but contributes only a modest amount.

A 60-serving bottle offers reasonable practicality, though the product is not unusually economical for such a simple formula. Users mainly seeking calcium should compare the elemental amount and form rather than the coral label.

Who is it for
  • Adults needing a moderate calcium top-up
  • Users comfortable with a two-tablet serving
  • People who understand elemental calcium labeling
Best for
  • Moderate calcium supplementation
  • Simple calcium and vitamin D3 support
  • Complementing dietary calcium

Pros

  • Provides 420 mg of elemental calcium
  • Includes 400 IU of vitamin D3
  • Avoids an unusually high calcium amount
  • Clearly states the elemental calcium contribution

Cons

  • Coral calcium has no stated advantage over citrate
  • The raw coral-material weight can confuse dose comparisons
  • Vitamin D3 is only modestly dosed
  • Value is not distinctive for a simple formula

Warnings

  • Use the 420 mg elemental calcium figure, not the 1.2 g coral-material weight, when calculating total calcium intake.
  • People with recurrent calcium-based kidney stones or high blood calcium should confirm whether extra calcium is appropriate.
  • Calcium can reduce absorption of levothyroxine, iron, and certain antibiotics; follow the product-specific spacing interval.

Nutrient quality

82 Highest impact

Moderate calcium and vitamin D3 provide focused bone support without aggressive dosing. The coral source offers no clear form advantage over simpler calcium products.

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Ingredient transparency

75 High impact

The elemental calcium amount and source total are visible without a proprietary blend. Inactive ingredients and complete use directions are not supplied.

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Customer satisfaction

69 High impact

The supplied average rating is particularly strong. The review count is large enough to provide useful rating confidence.

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Value for money

64 Moderate impact

A moderate elemental calcium amount provides some value. The coral source and moderate serving cost are not especially competitive.

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Ingredients

IngredientAmount per serving
Vitamin D3 (Cholecalciferol)
 400 IU
Calcium (Coral Calcium)
 420 mg
Coral Calcium
1.2 Gram(s)
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
Calcium (Coral Calcium) · 420 mg OverallScore86
C+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

Coral calcium provides a common mineral form with lower absorption potential than citrate or chelated options. The clearly stated 420 mg elemental dose fits the absorption-friendly serving range. A simple additive profile and low serving cost improve its practical appeal.

View ingredientView products
Vitamin D (Cholecalciferol) · 400 IU OverallScore51
B- Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyF Value

The label uses vitamin D3, the preferred form, but provides only 400 IU per serving. The dry tablet has no stated lipid carrier, and the raw D3 source is not disclosed. Cost efficiency is weak for the vitamin D amount, while no independent quality certification is provided.

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Loading alternative details
88 Performance

Calcium Hydroxyapatite Caps

NOW
<p>500 mg of calcium hydroxyapatite with 200 mg of naturally paired phosphorus offers a well-defined calcium form with a useful bone-mineral partner. A defined non-coral calcium source provides clearer form quality than the original coral ingredient. Vitamin D would need to come from diet or another source.</p>
82 Performance

Calcium Citrate

Nature's Way
<p>A 500 mg calcium serving drawn from carbonate, citrate, and malate offers better absorption flexibility than carbonate alone. A defined non-coral calcium source provides clearer form quality than the original coral ingredient. Vitamin D would need to come from diet or another source.</p>
83 Performance

Albion Chelated Calcium 180 mg

Swanson Ultra
<p>360 mg of calcium glycinate chelate with a small vitamin D3 amount offers a highly absorbable chelated calcium form. A defined non-coral calcium source provides clearer form quality than the original coral ingredient.</p>
85 Budget

600+D3

21st Century
<p>A lower-cost serving provides 600 mg of calcium carbonate with vitamin D3. A defined non-coral calcium source provides clearer form quality than the original coral ingredient.</p>
84 Budget

Calcium 600 with Vitamin D3

Nature's Bounty
<p>A lower-cost serving provides 600 mg of calcium carbonate with vitamin D3. A defined non-coral calcium source provides clearer form quality than the original coral ingredient.</p>
82 Budget

Calcium Citrate 600 mg

Spring Valley
<p>A lower-cost serving provides a clearly sized 600 mg calcium serving. A defined non-coral calcium source provides clearer form quality than the original coral ingredient. Vitamin D would need to come from diet or another source, and the supplied facts do not confirm the calcium form named in the title.</p>
84 Value

Calcium Citrate +D3 Petites

21st Century
<p>400 mg of calcium citrate with vitamin D3 pairs a moderate dose and a well-identified calcium form with favorable serving value. A defined non-coral calcium source provides clearer form quality than the original coral ingredient.</p>
83 Value

Citracal Petites Calcium Citrate +D3

Bayer Citracal
<p>400 mg of calcium with vitamin D3 in a compact serving pairs a moderate calcium and vitamin D pairing with favorable serving value. A defined non-coral calcium source provides clearer form quality than the original coral ingredient. The supplied facts do not confirm the calcium form named in the title.</p>
88 Value

Calcium Citrate Pure Powder

NOW
<p>600 mg of clearly identified calcium citrate in a simple powder pairs strong calcium-form clarity and absorption flexibility with favorable serving value. A defined non-coral calcium source provides clearer form quality than the original coral ingredient. Vitamin D would need to come from diet or another source.</p>
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