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Calcium Citrate with Vitamin D-3

4.6
★ ★ ★ ★ ★
(2767 ratings)
Calcium 1000 mg
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Score81
A practical calcium blend with vitamin D3 and flexible capsule dosing. Divide the 1,000 mg serving, and note that the formula lacks magnesium and vitamin K.
How scoring works
Capsule
Quantity:240 VegCap(s) • (60 servings)
Goals:
Bone Health

Score 81

A practical calcium blend with vitamin D3 and flexible capsule dosing. Divide the 1,000 mg serving, and note that the formula lacks magnesium and vitamin K.
How scoring works
$21.93($0.36 per serving)
iHerb
$ 22.69
Vitacost
$ 22.69
Amazon
$ 21.93
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Analysis

The serving pairs 1,000 mg of calcium from citrate and carbonate with 10 mcg of vitamin D3. Vitamin D3 supports calcium absorption, making the combination more useful for bone-focused supplementation than calcium alone.

Citrate improves flexibility for people with lower stomach acid, but the carbonate portion is best taken with food. Four capsules allow the oversized calcium serving to be divided into smaller doses.

The formula provides solid value and directly covers mineral supply plus an absorption cofactor. It does not include vitamin K or magnesium, so users wanting wider bone-pathway support would need to obtain those elsewhere.

Who is it for
  • Adults seeking calcium with vitamin D3
  • People able to split a multi-capsule serving
  • Users wanting a value-oriented bone supplement
Best for
  • Calcium intake plus vitamin D support
  • Divided mineral dosing
  • Users who prefer capsules

Pros

  • Includes calcium citrate and vitamin D3
  • Four capsules allow flexible serving division
  • Offers favorable serving value

Cons

  • The 1,000 mg calcium serving is inefficient at once
  • Carbonate is less flexible than citrate
  • No vitamin K or magnesium is included

Warnings

  • Divide the 1,000 mg calcium serving when possible; taking it all at once may reduce absorption and increase digestive discomfort.

Nutrient quality

83 Highest impact

Calcium and vitamin D3 are strongly aligned with bone support. Mixed calcium forms and an oversized single serving limit absorption quality.

Ingredient transparency

76 High impact

All listed active amounts are visible and no blend hides them. Form allocation, timing directions, and inactive ingredients are incomplete.

Customer satisfaction

72 High impact

The aggregate rating is very favorable and supported by a large evidence base. Specific experience details are absent, leaving recurring complaints and purpose fit uncertain.

Value for money

93 Highest impact

Useful nutrient pairing and a favorable serving cost support strong value. Mixed calcium forms modestly reduce the quality advantage.

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Goals

Bone Health
Bone Health
Impact
Highest effect
A+ Goal FitB- Strength of SupportB CoverageA Formula Quality
Calcium · 1000 mgVitamin D · 10 mcg

Calcium and vitamin D3 form a relevant pairing for bone mineral supply and calcium absorption. Citrate improves the mixed calcium base, while carbonate makes absorption quality less consistent.

The full 1000 mg calcium serving is larger than the amount usually absorbed efficiently at one time. Dividing the serving could improve use, and adding vitamin K within the bone-health collections would provide more complete calcium-handling support.

Study evidence
Calcium Supportive 144 studies
Vitamin D Supportive 202 studies

Ingredients

IngredientAmount per serving
Vitamin D (Cholecalciferol, Vitamin D3)
 10 mcg
Calcium (Calcium Carbonate, Calcium Citrate)
 1000 mg
Adults 18–50
Report overview
Calcium (Calcium Carbonate, Calcium Citrate) · 1000 mg OverallScore72
B Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyB+ Value

Calcium citrate improves the blend, but calcium carbonate makes absorption quality mixed. The 1000 mg serving is larger than the amount usually absorbed most efficiently at once, so dividing it may improve use. Vitamin D3 adds a useful cofactor while the cost remains favorable.

View ingredientView products
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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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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