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Coral Calcium 1000 mg

4.8
★ ★ ★ ★ ★
(3348 ratings)
Calcium 350 mg
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Score80
A practical one-capsule serving provides 350 mg calcium from fossilized coral. The source offers no clear advantage over better-established flexible forms, and no cofactors are included.
How scoring works
Capsule
Quantity:100 Capsule(s) • (100 servings)
Goals:

Score 80

A practical one-capsule serving provides 350 mg calcium from fossilized coral. The source offers no clear advantage over better-established flexible forms, and no cofactors are included.
How scoring works

Also available as

1 option
250 servings Calcium 350 mg • 250 Capsule(s) • 250 servings $23.10 ($0.09 per serving)
$11.60($0.11 per serving)
iHerb
$ 12.24
Vitacost
$ 13.19
Pure Formulas
$ 11.89
Daily Vita
$ 11.60
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Analysis

One capsule supplies 350 mg calcium from 1 gram of fossilized coral calcium. The amount can make a useful contribution when diet alone falls short.

The label clearly states the source, but coral calcium is generally less preferred than citrate or a fully chelated form. No evidence in the supplied data establishes a special benefit from the coral origin.

A 100-serving bottle is convenient and simple. The product works as focused calcium supplementation, while other bone nutrients need to be covered elsewhere.

Who is it for
  • Adults seeking a moderate calcium amount
  • Users who specifically accept coral-derived calcium
  • People whose vitamin D and magnesium are covered elsewhere
Best for
  • Focused calcium intake
  • One-capsule use
  • A 100-serving routine

Pros

  • Provides 350 mg calcium
  • Clearly names the coral source
  • Requires one capsule
  • Offers 100 servings

Cons

  • Coral calcium is less preferred than citrate or chelated forms
  • Provides no vitamin D or magnesium
  • The coral source adds no verified advantage in the supplied data

Warnings

  • Calcium can reduce absorption of levothyroxine and tetracycline or quinolone antibiotics; separate dosing according to prescriber or pharmacist instructions.
  • The mineral source is fossilized coral, so it may not fit users avoiding marine-derived materials.

Nutrient quality

78 High impact

Coral calcium is a usable source but is less predictable than clearly defined citrate or chelated calcium. The dose is practical, but the coral source offers less form certainty and little added benefit.

Ingredient transparency

83 Highest impact

The elemental calcium amount and coral-source weight are both stated. No proprietary blend hides the doses, but full directions and inactive ingredients are not supplied.

Customer satisfaction

74 High impact

The supplied average is exceptionally strong, with very large response volume. Complaint patterns and purpose-related experiences are not supplied.

Value for money

85 Highest impact

Formula quality generally supports the asking price despite some limitations. Each serving offers excellent practical value for its useful active dose.

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Ingredients

IngredientAmount per serving
Calcium (Coral Calcium)
 350 mg
fossilized Coral Calcium
1 Gram(s)
Gluten Free Adults 18–50 Kosher Dairy Free
Report overview
Calcium (Coral Calcium) · 350 mg OverallScore79
C+ Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyA+ Value

Coral calcium is a common source with lower expected absorption than citrate or fully chelated forms. The 350 mg elemental amount is clearly stated but may require another daily source for higher calcium needs. The single-capsule serving is inexpensive and practical.

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88 Performance

Calcium Hydroxyapatite Caps

NOW
<p>Hydroxyapatite supplies a practical calcium amount with naturally paired phosphorus in a simple capsule. Compared with Coral Calcium 1000 mg, its calcium form and supporting nutrients may be a better fit where coral sourcing is less informative than a named mineral salt, and the additional coral weight does not establish added benefit, while clear dosing, strong form quality, and favorable serving value make the formula well suited to routine bone support.</p>
85 Performance

Cal/Mag 500 mg/250 mg

NaturesPlus
<p>Chelated calcium and magnesium provide a focused, balanced mineral formula with strong form quality. Compared with Coral Calcium 1000 mg, its calcium form and supporting nutrients may be a better fit where coral sourcing is less informative than a named mineral salt, and the additional coral weight does not establish added benefit, while a simple one-serving format and economical cost make it one of the better value profiles in this set.</p>
83 Performance

600 + D3 plus Minerals

21st Century
<p>Calcium carbonate and vitamin D3 provide a direct, economical base for bone maintenance. Compared with Coral Calcium 1000 mg, its calcium form and supporting nutrients may be a better fit where coral sourcing is less informative than a named mineral salt, and the additional coral weight does not establish added benefit, while supportive minerals broaden the formula, though oxide forms and small secondary doses keep ingredient quality basic.</p>
85 Budget

600+D3

21st Century
<p>Calcium carbonate and vitamin D3 provide a focused bone-support pairing at exceptionally accessible value. Its lower recurring cost than Coral Calcium 1000 mg makes it a more economical calcium option, while the calcium amount is reasonably sized, though carbonate works best with food and offers less flexibility than citrate. Calcium should be separated from levothyroxine and tetracycline or quinolone antibiotics because it can reduce their absorption.</p>
85 Budget

Calcium Carbonate

NOW
<p>The pure powder supplies a substantial calcium amount with excellent serving value and no unrelated actives. Its lower recurring cost than Coral Calcium 1000 mg makes it a more economical calcium option, while calcium carbonate is less flexible than citrate because food and stomach acid aid absorption.</p>
84 Budget

Calcium 600 with Vitamin D3

Nature's Bounty
<p>Calcium and vitamin D3 form a focused, meaningfully dosed bone-support combination with strong serving value. Its lower recurring cost than Coral Calcium 1000 mg makes it a more economical calcium option, while calcium carbonate is best taken with food, and the formula does not cover magnesium or vitamin K.</p>
85 Value

Cal/Mag Caps

NaturesPlus
<p>Soy amino acid chelates provide a focused calcium-magnesium formula with balanced doses and strong form quality. Compared with Coral Calcium 1000 mg, its calcium profile offers a practical quality-to-cost trade-off despite not costing less, while good ratings and economical servings support solid value, though the review base is smaller than leading products.</p>
88 Value

Calcium Citrate Pure Powder

NOW
<p>Calcium citrate supplies a substantial, well-absorbed dose in a simple powder with clear active disclosure. Compared with Coral Calcium 1000 mg, its calcium profile offers a practical quality-to-cost trade-off despite not costing less, while the focused formula offers strong value but does not provide vitamin D, vitamin K, or magnesium.</p>
82 Value

Calcium Citrate

Nature's Way
<p>Citrate and malate improve absorption quality within the mixed calcium formula. Compared with Coral Calcium 1000 mg, its calcium profile offers a practical quality-to-cost trade-off despite not costing less, while active doses are clear, while missing excipient and full use details limit transparency.</p>
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