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Chewable Calcium

4.7
★ ★ ★ ★ ★
(629 ratings)
Calcium 500 mg
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Score84
A convenient chewable provides a practical calcium carbonate amount with a small D3 addition. Food dependence and minimal vitamin D support are the main limitations.
How scoring works
Tablet
Quantity:100 Tablet(s) • (100 servings)
Goals:
Bone Health

Score 84

A convenient chewable provides a practical calcium carbonate amount with a small D3 addition. Food dependence and minimal vitamin D support are the main limitations.
How scoring works
$6.39($0.06 per serving)
iHerb
$ 6.39
iHerb
$ 6.39
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Analysis

One chewable tablet supplies 500 mg calcium carbonate and 2.5 mcg vitamin D3. The serving is practical for users who have difficulty swallowing standard calcium tablets.

Calcium carbonate is food dependent and can cause constipation or bloating in some people. The D3 amount is a minor contribution rather than full vitamin D coverage.

A 100-serving supply offers easy long-term use and adds only 1 gram of carbohydrate per serving. The product works for a defined calcium gap when vitamin D and magnesium are handled elsewhere.

Who is it for
  • Adults who prefer chewable calcium
  • Users with a moderate calcium gap
  • People whose vitamin D needs are covered elsewhere
Best for
  • Chewable calcium supplementation
  • One-tablet routines
  • Long 100-serving use

Pros

  • Provides 500 mg calcium
  • Includes vitamin D3
  • Offers 100 servings
  • Uses a chewable format

Cons

  • Uses calcium carbonate
  • Vitamin D3 amount is very small
  • May cause constipation or bloating

Warnings

  • Take calcium carbonate with food.
  • Calcium can reduce absorption of levothyroxine and tetracycline or quinolone antibiotics; separate dosing according to prescriber or pharmacist instructions.

Nutrient quality

84 Highest impact

Calcium carbonate is a basic form, while vitamin D3 supports calcium absorption. The calcium dose is practical, although the vitamin D amount adds limited depth and carbonate is best taken with food.

Ingredient transparency

88 Highest impact

The calcium, vitamin D, and carbohydrate amounts are stated. No proprietary blend hides the doses, but full directions and inactive ingredients are not supplied.

Customer satisfaction

70 High impact

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

Value for money

92 Highest impact

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

Report analysis

Goals

Bone Health
Bone Health
Impact
High effect
A Goal FitC+ Strength of SupportC- CoverageA- Formula Quality
Calcium · 500 mgVitamin D · 2.5 mcg

Calcium carbonate supplies a meaningful structural amount, while vitamin D3 supports calcium absorption. The vitamin D3 amount is small, so it adds more formulation logic than substantial signaling support.

The chewable format addresses mineralization and a limited absorption pathway without magnesium, vitamin K, or protein-matrix support. Calcium carbonate is best taken with food because stomach acid helps release the mineral.

Study evidence
Calcium Supportive 144 studies
Vitamin D Supportive 202 studies

Ingredients

IngredientAmount per serving
Total Carbohydrates
1 Gram(s)
Vitamin D (Cholecalciferol)
 2.5 mcg
Calcium (Calcium Carbonate)
 500 mg
Adults 18–50
Report overview
Calcium (Calcium Carbonate) · 500 mg OverallScore80
C+ Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyA+ Value

Calcium carbonate is clearly identified but generally depends more on food and stomach acid for absorption. The 500 mg serving sits in the absorption-efficient target range. The chewable tablet carries minor carbohydrate content without disclosed artificial colors, sweeteners, or titanium dioxide, while the low serving cost provides excellent collection value.

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79 Performance

Calcium Mag & D Complex

Nature's Way
<p>Mixed citrate, malate, and aspartate forms partly offset the less favorable carbonate and oxide components. Compared with Chewable Calcium, its calcium form and supporting nutrients may be a better fit where calcium carbonate should be taken with food, and the formula leaves magnesium and vitamin K unaddressed, while calcium and magnesium are useful, while the vitamin D amount is too modest to add much to an otherwise coherent bone formula.</p>
88 Performance

Calcium Hydroxyapatite Caps

NOW
<p>Hydroxyapatite supplies a practical calcium amount with naturally paired phosphorus in a simple capsule. Compared with Chewable Calcium, its calcium form and supporting nutrients may be a better fit where calcium carbonate should be taken with food, and the formula leaves magnesium and vitamin K unaddressed, 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 Chewable Calcium, its calcium form and supporting nutrients may be a better fit where calcium carbonate should be taken with food, and the formula leaves magnesium and vitamin K unaddressed, while a simple one-serving format and economical cost make it one of the better value profiles in this set.</p>
81 Budget

Calcium 500 mg with Vitamin D3

Nature's Bounty
<p>A practical oyster-derived calcium amount and vitamin D3 provide focused bone support with exceptional affordability. Its lower recurring cost than Chewable Calcium makes it a more economical calcium option, while the likely carbonate source is less flexible than citrate, and duplicate vitamin D wording reduces label clarity.</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 Chewable Calcium 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 Chewable Calcium makes it a more economical calcium option, while calcium carbonate is less flexible than citrate because food and stomach acid aid absorption.</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 Chewable Calcium, 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>
82 Value

Calcium 500 + D3

21st Century
<p>Oyster-shell calcium is a basic source with less predictable quality than clearly identified citrate. Compared with Chewable Calcium, 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>
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 Chewable Calcium, 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>
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Sources

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

  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. Pregnancy vitamin D supplementation and offspring bone mineral density in childhood follow-up of a randomized controlled trial.
    Moon RJ; D' Angelo S; Curtis EM; Ward KA; Crozier SR; Schoenmakers I; Javaid MK; Bishop NJ; Godfrey KM; Cooper C; Harvey NC; MAVIDOS Trial Group · The American journal of clinical nutrition · 2024
    Randomized trial454 participantsBone Health forVitamin D
  7. Vitamin D analogs and bone: preclinical and clinical studies with eldecalcitol.
    Matsumoto T; Takano T; Saito H; Takahashi F · BoneKEy reports · 2014
    Narrative reviewBone Health forVitamin D
  8. Efficacy of vitamin D fortified foods on bone mineral density and serum bone biomarkers: A systematic review and meta-analysis of interventional studies.
    Tangestani H; Djafarian K; Emamat H; Arabzadegan N; Shab-Bidar S · Critical reviews in food science and nutrition · 2020
    Meta-analysis1,786 participants20 studies pooledBone Health forVitamin D
  9. Cholecalciferol Supplementation Attenuates Bone Loss in Incident Kidney Transplant Recipients: A Prespecified Secondary Endpoint Analysis of a Randomized Controlled Trial.
    Tsujita M; Doi Y; Obi Y; Hamano T; Tomosugi T; Futamura K; Okada M; Hiramitsu T; Goto N; Isaka Y; Takeda A; Narumi S; Watarai Y · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2022
    Randomized trial193 participantsBone Health forVitamin D
  10. Vitamin D supplementation and bone health in post-menopausal women: a 24-month randomized controlled intervention with enhanced bioavailability formulations.
    Rasool N; Munir Y · European journal of clinical nutrition · 2026
    Randomized trial612 participantsBone Health forVitamin D