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Pure Calcium Carbonate 600 mg

4.7
★ ★ ★ ★ ★
(52 ratings)
Calcium 600 mg
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Score80
A very economical calcium carbonate tablet with clear dosing. Take it with food and do not expect full bone-nutrient coverage.
How scoring works
Tablet
Quantity:100 Tablet(s) • (100 servings)
Goals:
Bone Health

Score 80

A very economical calcium carbonate tablet with clear dosing. Take it with food and do not expect full bone-nutrient coverage.
How scoring works
$10.00($0.10 per serving)
Walmart
$ 10.00
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Analysis

The calcium amount sits at the upper edge of a practical single dose and is clearly disclosed. A one-ingredient formula is easy to compare and inexpensive to use.

Calcium carbonate depends more on food and stomach acid than citrate. People using acid-suppressing medicine or with low stomach acid may find citrate a better fit.

The tablet supplies structural calcium but no vitamin D, magnesium, vitamin K, boron, or collagen support. Its usefulness depends on dietary calcium need and adequate cofactor intake elsewhere.

Who is it for
  • Adults seeking low-cost basic calcium
  • Users able to take calcium with meals
  • People whose diet covers vitamin D and other cofactors
Best for
  • Budget calcium supplementation
  • Simple one-tablet routines
  • Filling a specific calcium gap

Pros

  • Clear elemental amount
  • Single active ingredient
  • Very low serving cost

Cons

  • Carbonate relies on food and stomach acid
  • No vitamin D
  • No magnesium or vitamin K

Warnings

  • Take calcium carbonate with food for better absorption.
  • Separate it from levothyroxine and tetracycline or quinolone antibiotics.
  • Calcium carbonate may cause constipation, gas, or bloating.

Nutrient quality

79 High impact

A meaningful calcium amount keeps the formula simple and useful. The basic carbonate form and absence of vitamin D limit quality.

Ingredient transparency

84 Highest impact

The active amount, form, and single-tablet serving are clear. Non-active ingredients and intake directions are missing.

Customer satisfaction

64 Moderate impact

The aggregate rating is favorable and backed by a limited review volume. No specific comments are available to assess recurring problems or real-world fit.

Value for money

90 Highest impact

A long supply and focused formula provide good value. The basic form is the main trade-off for the low cost.

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Goals

Bone Health
Bone Health
Impact
High effect
B Goal FitB- Strength of SupportD+ CoverageB+ Formula Quality
Calcium · 600 mg

Calcium directly supplies the principal structural mineral in bone through a focused single-ingredient formula. Calcium has strong skeletal evidence when intake is inadequate, though benefits depend on vitamin D status and total dietary intake.

The product supplies structural calcium but no magnesium, D3, vitamin K, boron, or matrix support. A single calcium source is coherent, although it omits absorption and distribution cofactors.

Study evidence
Calcium Supportive 144 studies

Ingredients

IngredientAmount per serving
Calcium (Calcium Carbonate)
 600 mg
Gluten Free Adults 18–50 Sugar Free
Report overview
Calcium (Calcium Carbonate) · 600 mg OverallScore86
C+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

Calcium carbonate provides a clearly stated amount at the upper edge of efficient single-dose absorption. The basic form should be taken with food, while very low serving cost creates strong value. Calcium can reduce absorption of levothyroxine and tetracycline or quinolone antibiotics, so their dosing should be separated.

View ingredientView products
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88 Performance

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Cal/Mag 500 mg/250 mg

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Chelated calcium and magnesium provide balanced doses and strong form quality, adding a useful cofactor that many calcium-only products omit. The focused mineral formula does not include vitamin D or vitamin K.
82 Performance

Ultra BoneUp

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Calcium, vitamin D3, magnesium, MK-7, silicon, boron, and cartilage collagen cover more bone-support pathways than a simple calcium product. Magnesium oxide and modest supporting amounts temper the formula, and vitamin K requires consistent intake for people using vitamin K antagonists.
84 Budget

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The supplied serving cost is lower than the original, making it a genuine budget alternative. A straightforward calcium carbonate serving keeps the formula focused and exceptionally economical.
85 Budget

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The supplied serving cost is lower than the original, making it a genuine budget alternative. The pure powder provides a substantial calcium amount with strong serving value and no unrelated actives.
84 Budget

Calcium 600 with Vitamin D3

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The supplied serving cost is lower than the original, making it a genuine budget alternative. Meaningful calcium and vitamin D3 amounts create a focused bone-support option with strong serving value.
88 Value

Calcium Citrate Pure Powder

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A simple powder delivers a substantial, clearly disclosed calcium citrate amount with strong absorption flexibility and serving value. That balance makes it a practical value-focused alternative. Vitamin D, vitamin K, and magnesium are not included.
82 Value

Calcium Citrate

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Citrate and malate improve absorption flexibility while keeping the supplemental amount practical and the serving cost favorable. That balance makes it a practical value-focused alternative. Missing excipient and full-use details reduce transparency.
84 Value

Calcium Citrate +D3 Petites

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Calcium citrate and vitamin D3 combine useful bone-support ingredients in a practical serving with strong value. That balance makes it a practical value-focused alternative. The supplied data do not include excipient details or complete directions.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Calcium supplementation during pregnancy and maternal and offspring bone health: a systematic review and meta-analysis.
    Tihtonen K; Korhonen P; Isojärvi J; Ojala R; Ashorn U; Ashorn P; Tammela O · Annals of the New York Academy of Sciences · 2022
    Meta-analysis1,566 participants7 studies pooledBone Health forCalcium
  2. Calcium supplementation and bone mineral density in postmenopausal women using estrogen replacement therapy.
    Haines CJ; Chung TK; Leung PC; Hsu SY; Leung DH · Bone · 1995
    Randomized trialBone Health forCalcium
  3. Calcium supplementation provides an extended window of opportunity for bone mass accretion after menarche.
    Rozen GS; Rennert G; Dodiuk-Gad RP; Rennert HS; Ish-Shalom N; Diab G; Raz B; Ish-Shalom S · The American journal of clinical nutrition · 2003
    Randomized trial100 participantsBone Health forCalcium
  4. Relationship between bone mineral density changes and risk of fractures among patients receiving calcium with or without vitamin D supplementation: a meta-regression.
    Rabenda V; Bruyère O; Reginster JY · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2011
    Meta-analysis47,365 participants15 studies pooledBone Health forCalcium
  5. Treatment with alendronate plus calcium, alendronate alone, or calcium alone for postmenopausal low bone mineral density.
    Bonnick S; Broy S; Kaiser F; Teutsch C; Rosenberg E; DeLucca P; Melton M · Current medical research and opinion · 2007
    Randomized trial701 participantsBone Health forCalcium
  6. What is the impact of daily oral supplementation of vitamin D3 (cholecalciferol) plus calcium on the incidence of hip fracture in older people? A systematic review and meta-analysis.
    Manoj P; Derwin R; George S · International journal of older people nursing · 2023
    Meta-analysis12,620 participants7 studies pooledBone Health forCalcium
  7. Calcium supplementation prevents seasonal bone loss and changes in biochemical markers of bone turnover in elderly New England women: a randomized placebo-controlled trial.
    Storm D; Eslin R; Porter ES; Musgrave K; Vereault D; Patton C; Kessenich C; Mohan S; Chen T; Holick MF; Rosen CJ · The Journal of clinical endocrinology and metabolism · 1998
    Randomized trial60 participantsBone Health forCalcium
  8. The effects of calcium supplementation (milk powder or tablets) and exercise on bone density in postmenopausal women.
    Prince R; Devine A; Dick I; Criddle A; Kerr D; Kent N; Price R; Randell A · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 1995
    Randomized trial168 participantsBone Health forCalcium
  9. The efficacy of calcium supplementation alone in elderly Thai women over a 2-year period: a randomized controlled trial.
    Rajatanavin R; Chailurkit L; Saetung S; Thakkinstian A; Nimitphong H · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2014
    Randomized trial404 participantsBone Health forCalcium
  10. Calcium-enriched foods and bone mass growth in prepubertal girls: a randomized, double-blind, placebo-controlled trial.
    Bonjour JP; Carrie AL; Ferrari S; Clavien H; Slosman D; Theintz G; Rizzoli R · The Journal of clinical investigation · 1997
    Randomized trial149 participantsBone Health forCalcium