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Calcium Citrate with Vitamin D

4.8
★ ★ ★ ★ ★
(960 ratings)
Calcium 500 mg
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Score81

A sensible calcium citrate dose is the strength, while modest vitamin D2 and average value are the main compromises.

How scoring works
Tablet
Quantity:120 Tablet(s) • (60 servings)
Goals:
Bone Health

Score 81

A sensible calcium citrate dose is the strength, while modest vitamin D2 and average value are the main compromises.

How scoring works
$21.69($0.36 per serving)
iHerb
$ 21.69
Pure Formulas
$ 21.69
Vitacost
$ 21.69
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Analysis

The calcium amount is well suited to one sitting and citrate can be taken with or without food. That makes the tablet more flexible than a large calcium carbonate serving.

Vitamin D2 adds some support for calcium absorption but is generally less effective at maintaining vitamin D status than vitamin D3. Its modest amount means users with low vitamin D may still need a separately planned approach.

The focused formula avoids unrelated ingredients and makes the dose easy to understand. Serving value is moderate, so the main reason to choose it is citrate form quality rather than price.

Who is it for
  • Adults seeking a moderate citrate dose
  • People who need calcium that can be taken without food
  • Users who already have a separate vitamin D plan
Best for
  • One-dose calcium supplementation
  • Flexible meal timing
  • Basic calcium-plus-vitamin-D support

Pros

  • Calcium citrate form
  • Practical single-dose amount
  • Includes vitamin D
  • Focused formula

Cons

  • Uses vitamin D2 rather than D3
  • Vitamin D amount is modest
  • No magnesium or vitamin K
  • Only moderate serving value

Warnings

  • Separate calcium from levothyroxine and certain antibiotics according to medication guidance.
  • Kidney stones, high blood calcium, or significant kidney disease require medical guidance.
  • Check total vitamin D and calcium intake before combining with other bone supplements.

Nutrient quality

87 Highest impact

Calcium citrate provides a useful form and a practical amount. The low-dose vitamin D2 is a weaker cofactor than a meaningful vitamin D3 amount.

Ingredient transparency

79 High impact

Active amounts and forms are clearly identified. Intake directions and non-active ingredients are not included in the supplied facts.

Customer satisfaction

72 High impact

The aggregate rating is strong and has a useful response base. No review text is supplied, so repeated complaints and purpose-specific experiences cannot be verified.

Value for money

85 Highest impact

A practical calcium dose and focused formula support good value. The weak vitamin D contribution prevents the formula from offering broader bone-support value.

Report analysis

Goals

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

Calcium citrate provides focused structural mineral support in a reasonably absorbable form. The 500 mg amount is useful, but the vitamin D amount is too small to provide strong absorption support.

Vitamin D2 is also less preferred than D3 for maintaining vitamin D status. The simple formula is coherent and transparent but does not include magnesium, K2, or protein-matrix support.

Study evidence
Calcium Supportive 144 studies
Vitamin D Supportive 202 studies

Ingredients

IngredientAmount per serving
Vitamin D (Ergocalciferol)
2.5 mcg
Calcium (Calcium Citrate)
500 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Sugar Free Halal Vegetarian
Report overview
A- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value

Calcium citrate is a well-absorbed form that does not depend heavily on stomach acid. The serving amount falls in the efficient range for a single dose and is paired with vitamin D. The per-serving value is competitive for the collection.

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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