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Calcium 1000 mg

21st Century
4.7
(11132 ratings)
Calcium 1000 mg
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Score93

A high-dose calcium and D3 tablet that provides a solid foundation for bone health at a low cost.

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

Score 93

A high-dose calcium and D3 tablet that provides a solid foundation for bone health at a low cost.

How scoring works
$6.21($0.06 per serving)
Amazon
$ 6.21
Walmart
$ 7.46
iHerb
$ 6.49
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Analysis

This tablet provides a high amount of calcium carbonate, which can contribute to the structural integrity of your bones. The addition of 20mcg of vitamin D3 is a great feature because it helps your body absorb the mineral from your digestive system. It’s a simple but effective combination for people looking for foundational skeletal health.

The price is very affordable, making it accessible for long-term daily supplementation. Because it uses the carbonate form, you should take it with a meal to help your body break it down. It is a practical and reliable choice for anyone wanting a high-dose calcium supplement.

Pros

  • High 1000mg dose per serving
  • Includes Vitamin D3
  • Very affordable price
  • Simple, effective formula
  • Good for maintaining bone density

Cons

  • Requires taking two tablets for full dose
  • Uses carbonate form (must be with food)
  • Not ideal for those with low stomach acid

Warnings

  • Always take with food
  • Drink a full glass of water with each dose
  • Consult a professional if you have kidney concerns

Nutrient quality

85 Highest impact

The pairing of calcium carbonate and Vitamin D3 is a classic and effective foundation for bone support. Carbonate provides a high elemental yield but requires stomach acid for best results.

Ingredient transparency

98 Highest impact

Active weights for both calcium and vitamin D3 are clearly disclosed alongside their specific chemical forms. This clear labeling allows for an accurate assessment of the product's nutritional profile.

Customer satisfaction

93 Highest impact

Consistently high ratings and a very large volume of reviews indicate strong consumer confidence and product reliability. Feedback suggests the product is well-received for daily bone support.

Value for money

96 Highest impact

The price per serving is exceptionally low, making this one of the best values in the calcium category. It represents a highly competitive option for cost-conscious individuals.

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Goals

Impact
High effect
B+ Goal FitC+ Strength of SupportD+ CoverageA Formula Quality

The blend provides calcium carbonate and a significant dose of vitamin D3 to support skeletal mineralization. It focuses on a straightforward approach to addressing foundational mineral needs.

While affordable, the reliance on carbonate requires consumption with food for optimal absorption and lacks the broader minerals needed for comprehensive bone support.

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Ingredients

IngredientAmount per serving
Vitamin D3 (Cholecalciferol)
20 mcg
Calcium (Calcium Carbonate)
1000 mg
Gluten Free Adults 18–50
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C+ Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyA+ Value
This supplement provides a basic form of calcium carbonate alongside vitamin D for improved utilization. It is a highly economical option for individuals looking for foundational bone support.
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