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Calcium Citrate 600 mg

Spring Valley
4.7
★ ★ ★ ★ ★
(1494 ratings)
Calcium 600 mg
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Score82
An economical calcium citrate product with a strong but practical serving. It is an excellent focused option when other bone nutrients are covered elsewhere.
How scoring works
Quantity:300 Tablet(s) • (150 servings)
Goals:
Bone Health

Score 82

An economical calcium citrate product with a strong but practical serving. It is an excellent focused option when other bone nutrients are covered elsewhere.
How scoring works
$9.63($0.06 per serving)
Walmart
$ 9.63
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Analysis

The citrate form is well suited to users who want calcium without relying heavily on stomach acid. The stated amount is substantial and near the upper end of what is used efficiently at once.

Two tablets make the serving reasonably practical, and the long bottle offers strong value. No chemical form appears in the ingredient line, but the product title identifies citrate.

The formula is calcium-only and therefore depends on dietary vitamin D, magnesium, vitamin K, and protein. It fits a specific calcium gap better than broad bone support.

Who is it for
  • Adults seeking low-cost calcium citrate
  • People with adequate vitamin D and magnesium intake
  • Users wanting a long tablet supply
Best for
  • Focused calcium supplementation
  • Low-stomach-acid users
  • Value-conscious routines

Pros

  • Citrate form supports dependable absorption
  • Long supply
  • Very low serving cost

Cons

  • No vitamin D
  • No magnesium or vitamin K
  • Serving sits at the upper absorption edge

Warnings

  • Calcium can interfere with levothyroxine and tetracycline or quinolone antibiotics.
  • Users prone to constipation may tolerate divided intake better.
  • Total dietary and supplemental calcium should be reviewed if there is a history of kidney stones.

Nutrient quality

84 Highest impact

A meaningful calcium amount provides a focused supplement. Missing form confirmation limits confidence in absorption quality.

Ingredient transparency

78 High impact

The active amount and implied serving size are visible. The calcium form, non-active ingredients, and directions are missing.

Customer satisfaction

72 High impact

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

Value for money

94 Highest impact

A long supply and focused formula provide strong value. Unconfirmed calcium form is the main quality limitation.

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Goals

Bone Health
Impact
Highest effect
A Goal FitA Strength of SupportC- CoverageA- Formula Quality
Calcium · 600 mg

Calcium citrate supplies a primary structural mineral in a well-absorbed form. The amount sits near the upper end of efficient single-dose use and is clearly disclosed.

The streamlined formula provides strong depth for calcium but does not include vitamin D, vitamin K, magnesium, or collagen support. Its suitability depends on how much calcium the diet already provides.

Study evidence
Calcium Supportive 144 studies

Ingredients

IngredientAmount per serving
Calcium
600 mg
Adults 18–50
Report overview
Calcium · 600 mg OverallScore94
A- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

Calcium citrate provides good absorption, and the serving amount sits at the upper edge of the efficient single-dose range. Two tablets offer a practical serving without disclosed controversial additives. Very low serving cost makes the formula highly cost-efficient.

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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