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Calcium Citrate 1000

KAL
4.9
★ ★ ★ ★ ★
(13127 ratings)
Calcium 1000 mg
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Score92

A high-dose, bioavailable calcium citrate supplement that is gentle on the stomach and easy to absorb.

How scoring works
Quantity:90 Tablet(s) • (30 servings)
Goals:
Bone Health

Score 92

A high-dose, bioavailable calcium citrate supplement that is gentle on the stomach and easy to absorb.

How scoring works

Also available as

1 option
180 servings Calcium 1000 mg • 180 Tablet(s) • 60 servings $18.49 ($0.30 per serving)
$11.59($0.38 per serving)
iHerb
$ 11.59
Pure Formulas
$ 11.59
Amazon
$ 11.59
Walmart
$ 11.59
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Analysis

Calcium citrate does not require stomach acid to break down, making it much more flexible than carbonate versions. This means you can take it at any time of day with or without food and still get the benefits.

Providing 1000mg of elemental calcium in a single-mineral formula is great for those who already get enough magnesium and D3 elsewhere. It is a focused tool for those needing to increase their daily mineral intake specifically for bone density.

Pros

  • Highly bioavailable citrate form
  • Gentle on the digestive system
  • Can be taken without food
  • Potent 1000mg elemental dose

Cons

  • Lacks all essential cofactors (D3, Mg)
  • Large tablet size
  • Requires other supplements for balance

Warnings

  • Drink plenty of water with each tablet
  • Not intended as a standalone bone formula

Nutrient quality

88 Highest impact

The use of calcium citrate is a major strength due to its superior solubility and bioavailability. The absence of Vitamin D3 is the primary limitation for achieving optimal bone health benefits.

Ingredient transparency

98 Highest impact

Labeling is exceptionally clear, specifying both the chemical form and the elemental weight of the mineral. This transparency provides consumers with complete information regarding the product's composition.

Customer satisfaction

97 Highest impact

Outstanding user ratings across a massive review count demonstrate exceptional consumer trust. Feedback highlights the efficacy and digestibility of the citrate mineral form.

Value for money

85 Highest impact

The cost per serving is reasonable given the use of high-quality calcium citrate. It offers good value for individuals seeking a well-absorbed and reliable mineral source.

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Goals

Bone Health
Impact
High effect
B Goal FitA- Strength of SupportF CoverageB- Formula Quality

Calcium citrate provides a foundational structural mineral for bone density in a highly bioavailable form. This organic acid salt ensures superior absorption regardless of stomach acidity, supporting efficient skeletal uptake.

The single-ingredient approach focuses purely on structural material supply but misses transport and matrix-specific cofactors. It serves as a reliable primary mineral source that should be paired with signaling vitamins for optimal bone health.

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Ingredients

IngredientAmount per serving
Calcium (Calcium Citrate)
 1000 mg
Adults 18–50
Report overview
Calcium (Calcium Citrate) · 1000 mg OverallScore76
A- Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyB+ Value
This supplement uses pure calcium citrate to provide a well-absorbed mineral source for bone health. It is a highly efficient and straightforward option for daily supplementation.
View ingredientView products
92 Value

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Albion Chelated Calcium 180 mg

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Chelated Calcium Magnesium

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99 Budget

Calcium Citrate Pure Powder

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100% Pure & Dairy-Free Calcium Citrate

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Calcium Carbonate

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Providing high elemental yield from pure carbonate powder offers an even more affordable way to support bone density. This is a practical choice for those who do not require the specific organic acid salt form.
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92 Value

Calcium Citrate +D3 Maximum

21st Century
4.8
★★★★★
(26378 ratings)
Combining the same bioavailable citrate form with vitamin D3 ensures better absorption and utilization of the mineral. This provides more complete skeletal support than KAL's single-ingredient formula at a better price.
Other sellers (1)
95 Value

Calcium Citrate Magnesium and Zinc

Kirkland Signature
4.7
★★★★★
(110 ratings)
Upgrading to a complex with D3, Zinc, and Boron provides a much broader range of support for the organic bone matrix. This product offers superior professional-grade diversity for a very competitive cost.
Other sellers (0)
98 Value

TriCalcium Complex with D & K

Swanson Premium Brand
4.8
★★★★★
(509 ratings)
Incorporating three sources of calcium along with vitamins D and K provides a layered approach to bone mineralization. This multifaceted formula offers significantly better nutritional balance for the price.
Other sellers (0)
97 Performance

Albion Chelated Calcium 180 mg

Swanson Ultra
4.8
★★★★★
(137 ratings)
Utilizing patented TRAACS glycinate technology ensures even higher bioavailability than the citrate form. The addition of vitamin D3 provides the missing transport signal needed for efficient mineral utilization.
Other sellers (0)
91 Performance

Chelated Calcium Magnesium

Bluebonnet
4.7
★★★★★
(2443 ratings)
Selection of both calcium and magnesium as bisglycinate chelates ensures optimal mineral balance and is exceptionally gentle on the gut. This combination provides more complete structural support than a single mineral.
Other sellers (2)
96 Performance

Calcium Bone Maker Complex with MCH-Cal and VitaMK7

Doctor's Best
4.7
★★★★★
(7548 ratings)
Provision of MCH-Cal and phosphorus provides a mineral structure compatible with natural human bone. Including vitamin K2 and boron ensures that the minerals are properly transported and integrated into the skeleton.
Other sellers (4)
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