Product Image

Calcium & Vitamin D3 Citrus Flavored

4.7
★ ★ ★ ★ ★
(2771 ratings)
Calcium 1000 mg
Product Image
Score80
A useful liquid bone formula with citrate calcium and a meaningful vitamin D3 dose. Divide the large calcium serving when possible, and do not expect the modest magnesium and boron amounts to make it fully comprehensive.
How scoring works
Liquid
Quantity:16 Fluid Ounce(s) • (16 servings)
Goals:
Bone Health

Score 80

A useful liquid bone formula with citrate calcium and a meaningful vitamin D3 dose. Divide the large calcium serving when possible, and do not expect the modest magnesium and boron amounts to make it fully comprehensive.
How scoring works
$5.74($0.35 per serving)
iHerb
$ 7.23
Vitacost
$ 7.53
Walmart
$ 7.23
Pure Formulas
$ 5.74
Vitacost
$ 7.53
Report prices

Analysis

The liquid combines 1,000 mg of citrate-based calcium with 25 mcg of vitamin D3. Those ingredients directly support calcium intake and absorption, while magnesium and boron provide smaller supporting contributions.

Citrate is less dependent on stomach acid than carbonate, making the calcium source flexible. The full 1,000 mg amount is more than the body typically absorbs efficiently at once, so dividing the serving may improve practical use.

The flavored liquid can work well for people who dislike pills, and the formula offers good value. It lacks vitamin K and supplies only modest magnesium, so it does not cover every major bone-support pathway.

Who is it for
  • Adults who prefer liquid calcium
  • People seeking calcium with vitamin D3
  • Users who benefit from a citrate-based mineral source
Best for
  • Bone mineral and calcium-absorption support
  • People who have difficulty swallowing pills
  • Divided calcium dosing across the day

Pros

  • Uses citrate-based calcium
  • Includes 25 mcg of vitamin D3
  • Adds magnesium and boron for broader support

Cons

  • The 1,000 mg calcium serving is too large for efficient single-dose absorption
  • Magnesium and boron amounts are modest
  • Does not include vitamin K

Warnings

  • The 1,000 mg calcium serving may cause digestive discomfort and is usually better divided when the label directions permit.

Nutrient quality

83 Highest impact

Citrate-based calcium and vitamin D3 provide strong bone-focused nutrient quality. The single large calcium serving and modest supporting nutrients keep the formula from being ideally balanced.

Ingredient transparency

75 High impact

All listed active amounts are disclosed without a proprietary blend. Practical directions, inactive ingredients, and some source allocation remain unclear.

Customer satisfaction

72 High impact

The aggregate rating is excellent and rests on a very large evidence base. Specific experience details are unavailable, so complaint patterns and real-world purpose fit cannot be judged.

Value for money

90 Highest impact

Strong nutrient forms and a favorable serving cost support good value. Some carbohydrate and label ambiguity modestly reduce the quality advantage.

Report analysis

Goals

Bone Health
Bone Health
Impact
Highest effect
A Goal FitA- Strength of SupportB CoverageA- Formula Quality
Magnesium · 40 mgCalcium · 1000 mgVitamin D · 25 mcgBoron · 250 mcg

Calcium citrate and vitamin D3 directly support mineral supply and calcium absorption. The clearly disclosed formula also adds magnesium and boron, although those supporting amounts are modest.

The full calcium serving is larger than the body typically uses most efficiently at one time, so dividing it may improve absorption. Vitamin K and protein-matrix support are absent, leaving the formula strong for mineralization but less complete across bone pathways.

Study evidence
Boron Supportive 5 studies
Calcium Supportive 144 studies
Magnesium Supportive 48 studies
Vitamin D Supportive 202 studies

Ingredients

IngredientAmount per serving
Calories
20 Calorie(s)
Total Carbohydrates
3 Gram(s)
Vitamin D3 (Cholecalciferol)
 25 mcg
Calcium (Calcium Citrate, Calcium Magnesium Citrate)
 1000 mg
Magnesium (Calcium Magnesium Citrate)
 40 mg
Sodium
10 mg
Boron (Boron Aspartate, Citric Acid, Rice Protein)
 250 mcg
Gluten Free Adults 18–50 Sugar Free Vegetarian
Report overview
Calcium (Calcium Citrate, Calcium Magnesium Citrate) · 1000 mg OverallScore76
A- Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyB+ Value

Citrate-based calcium offers a well-absorbed source that does not depend as heavily on stomach acid. The 1000 mg serving is larger than the amount usually absorbed most efficiently at once, so dividing it may improve use. The cost is favorable, and the supplied ingredient data shows no flagged additives.

View ingredientView products
Loading alternative details
88 Performance

Calcium Hydroxyapatite Caps

NOW
Hydroxyapatite supplies a practical calcium amount with naturally paired phosphorus and clear dosing, giving broader bone-mineral support than a basic calcium-only formula. The supplied data omit complete directions and inactive ingredients.
85 Performance

Cal/Mag 500 mg/250 mg

NaturesPlus
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

Jarrow Formulas
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

600 Calcium Supplement

21st Century
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

Calcium Carbonate

NOW
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

Nature's Bounty
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

NOW
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

Nature's Way
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

21st Century
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. [Comparative study of the urinary excretion of boron, calcium, magnesium and phosphorus in postmenopausal women with and without osteoporosis].
    José Ramón V; Mora Mora M; Marino Alarcón O; Hernández G; Josefina Linares L; Urdaneta Romero H; Arévalo González E · Investigacion clinica · 2013
    Case-control study45 participantsBone Health forBoron
  7. Effect of dietary boron on mineral, estrogen, and testosterone metabolism in postmenopausal women.
    Nielsen FH; Hunt CD; Mullen LM; Hunt JR · FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 1987
    Single-arm trial12 participantsBone Health forBoron
  8. The relationship between boron and magnesium status and bone mineral density in the human: a review.
    Volpe SL; Taper LJ; Meacham S · Magnesium research · 1994
    Narrative reviewBone Health forBoron
  9. Effects of boron supplementation on bone mineral density and dietary, blood, and urinary calcium, phosphorus, magnesium, and boron in female athletes.
    Meacham SL; Taper LJ; Volpe SL · Environmental health perspectives · 1995
    Randomized trial28 participantsBone Health forBoron
  10. Metabolic responses of postmenopausal women to supplemental dietary boron and aluminum during usual and low magnesium intake: boron, calcium, and magnesium absorption and retention and blood mineral concentrations
    C D Hunt, J L Herbel, F H Nielsen · The American Journal of Clinical Nutrition · 1997
    Non-randomized trial11 participantsBone Health forBoron
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. Association between Serum Magnesium and Fractures: A Systematic Review and Meta-Analysis of Observational Studies.
    Dominguez LJ; Veronese N; Ciriminna S; Pérez-Albela JL; Vásquez-López VF; Rodas-Regalado S; Di Bella G; Parisi A; Tagliaferri F; Barbagallo M · Nutrients · 2023
    Meta-analysis119,755 participants4 studies pooledBone Health forMagnesium
  17. Bioabsorbable Magnesium-Based Materials Potential and Safety in Bone Surgery: A Systematic Review.
    Hung CH; Kwok YC; Yip J; Wong HH; Leung YY · Craniomaxillofacial trauma & reconstruction · 2025
    Systematic review386 participants8 studies pooledBone Health forMagnesium
  18. Vascularized bone grafting fixed by biodegradable magnesium screw for treating osteonecrosis of the femoral head.
    Zhao D; Huang S; Lu F; Wang B; Yang L; Qin L; Yang K; Li Y; Li W; Wang W; Tian S; Zhang X; Gao W; Wang Z; Zhang Y; Xie X; Wang J; Li J · Biomaterials · 2016
    Randomized trial48 participantsBone Health forMagnesium
  19. An update on magnesium and bone health.
    Rondanelli M; Faliva MA; Tartara A; Gasparri C; Perna S; Infantino V; Riva A; Petrangolini G; Peroni G · Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2022
    Narrative reviewBone Health forMagnesium
  20. Sex-specific differences in the association of magnesium intake with femoral neck bone mineral density among older adults.
    Wang B; Tan X; Yao X; Zhu Z · Endocrine connections · 2025
    Cross-sectional study1,343 participantsBone Health forMagnesium
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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