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Calcium Citrate +D3 Maximum

21st Century
4.8
★ ★ ★ ★ ★
(26378 ratings)
Calcium 630 mg
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Score92

A reliable 60-day supply of well-absorbed calcium citrate and vitamin D3 for skeletal maintenance.

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

Score 92

A reliable 60-day supply of well-absorbed calcium citrate and vitamin D3 for skeletal maintenance.

How scoring works

Also available as

2 options
400mg • 200 Tablet(s) servings Calcium 400 mg • 200 Tablet(s) • 100 servings $10.99 ($0.10 per serving) 75 servings Calcium 630 mg • 75 Tablet(s) • 37 servings $6.49 ($0.17 per serving)
$6.99($0.11 per serving)
iHerb
$ 8.49
Amazon
$ 8.11
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Analysis

The combination of calcium citrate and cholecalciferol (D3) is one of the most reliable pairings for skeletal support. Citrate is highly soluble, which helps it get into your system more effectively than standard mineral salts.

This supplement is a great practical choice for daily use because it doesn't require a heavy meal to work properly. It provides a robust dose of elemental calcium in a form that respects your digestive health.

Pros

  • Well-absorbed citrate form
  • Includes vitamin D3
  • Gentle digestive profile
  • Good price-to-potency ratio

Cons

  • No magnesium support
  • Missing trace minerals
  • Tablets may be difficult for some to swallow

Warnings

  • Monitor for any signs of hypercalcemia if taking high doses
  • Consistency is key for bone health

Nutrient quality

85 Highest impact

High solubility of the citrate form ensures efficient absorption in the digestive tract. Inclusion of vitamin D3 provides the necessary signaling for mineral transport to the bones.

Ingredient transparency

93 Highest impact

Disclosure of both the specific chemical forms and elemental amounts allows for accurate nutritional assessment. Clear serving instructions facilitate proper use to maximize intestinal absorption.

Customer satisfaction

95 Highest impact

Exceptionally high ratings across a massive number of reviews indicate strong consumer confidence. Consistency in feedback suggests that the sensory experience and perceived results meet user expectations.

Value for money

95 Highest impact

Highly competitive pricing per serving provides excellent value for a bioavailable mineral source. The inclusion of vitamin D3 at this price point enhances the overall utility of the purchase.

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Goals

Bone Health
Impact
Highest effect
A Goal FitA Strength of SupportC CoverageA Formula Quality

Calcium citrate provides a highly bioavailable structural mineral to maintain bone mineral density and skeletal strength. Vitamin D3 is included to ensure efficient intestinal absorption and mineral transport to the bone matrix.

This selection is superior to standard carbonate forms due to its high solubility and lack of requirement for stomach acid. However, the formula lacks foundational magnesium and signaling cofactors like vitamin K2, which are necessary for full skeletal synergy.

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Ingredients

IngredientAmount per serving
Vitamin D3 (Cholecalciferol)
 13 mcg
Calcium (Calcium Citrate)
 630 mg
Gluten Free Adults 18–50
Report overview
Calcium (Calcium Citrate) · 630 mg OverallScore74
A- Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyA+ Value
This high-count bottle of calcium citrate offers premium mineral bioavailability for long-term bone density support. It provides a robust dose in a format that is well-tolerated by those with sensitive digestive systems.
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TriCalcium Complex with D & K

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Albion Chelated Calcium 180 mg

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Chelated Calcium Magnesium

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Calcium Citrate Pure Powder

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Providing foundational calcium and a robust dose of vitamin D3 in a tablet format offers similar structural support for building density. This is a practical and very affordable way to maintain mineral levels.
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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.
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96 Value

Calcium Citrate Caps

NOW
4.8
★★★★★
(2223 ratings)
Selection of bioavailable citrate paired with magnesium and chelated trace minerals provides high-quality structural support. This comprehensive formula offers better overall nutritional balance for the price.
Other sellers (3)
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 better nutritional balance for a very efficient 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. This premium chelated mineral is especially gentle on the gut and is paired with vitamin D3 for efficient uptake.
Other sellers (0)
91 Performance

Chelated Calcium Magnesium

Bluebonnet
4.7
★★★★★
(2443 ratings)
Selection of calcium and magnesium as bisglycinate chelates ensures optimal mineral balance and superior absorption. This synergistic combination provides more complete structural support for the entire skeletal system.
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 vitamin K2 ensures minerals are properly directed to the bones and supports arterial flexibility. This complete formula includes boron and other elements crucial for matrix resilience.
Other sellers (4)
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