Nature’s

Nature's Bounty Calcium Plus 400 IU Vitamin D3

Calcium
Tablet
Calcium
300

4.7/ 5 on Amazon7,100Amazon ratings3,000+bought last month4.6ProductDome score

Better rated than 63%
More reviewed than 83%

High confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology

Best forYou want a bulk calcium and vitamin D3 tablet for daily bone support.

This bulk-format calcium and D3 tablet from an established brand suits daily long-term use rather than short-term supplementation.

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ProductDome scorecard

How it ranks among the 107 calcium we track

4.6/ 5ProductDome scoreHigh confidence

Owner satisfaction · 56% of scorecategory median 4.6★4.7

4.7★ across 7,100 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 1,800 ratings4.8

7,100 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score4.7

3,000+ bought on Amazon last month.

Data quality · 11% of score3.8

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 107 calcium we track - how the scorecard works · full calcium data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

Nature's Bounty pairs calcium with 400 IU of vitamin D3 in a 300-tablet bottle built for bone, joint and immune support.

Pairing calcium with vitamin D3 is standard because D3 supports calcium absorption; this is a large 300-tablet bottle aimed at ongoing daily use rather than a short course. The allergen note lists molluscs, which is typical for calcium sourced from shell-derived material.

Calcium plus 400 IU vitamin D3
300 tablets per bottle
Bone and joint support
Gluten free

Who it's for

People wanting an everyday calcium and D3 tablet in a bulk bottle, particularly those tracking bone health. Not suitable for anyone with a shellfish or mollusc allergy given the listed allergen.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out

300 tablets is a long-lasting bulk supply
Combines calcium with 400 IU D3

What to check first

Contains molluscs, unsuitable for shellfish allergies
Tablet-only, no chewable or gummy option

Performance notes

Vitamin D3 is included alongside calcium because D3 governs how well the body absorbs and uses calcium, which is the standard rationale for combining the two in one tablet.

Specifications

Brand	Nature’s
Model	7087
Form	Tablet
Supplement Type	Calcium
Count	300
Benefits	Bone & Joint Support, Immune Support, Nutritional Support
Flavor	Unflavored
Diet	Gluten Free
Allergens	Molluscs

How it compares

This product against the closest alternatives we track in calcium.

Product	Amazon rating	Ratings	ProductDome score
Nature's Bounty Calcium Plus 400 IU Vitamin D3This product	4.7 / 5	7,100	4.6 / 5
Nature Made Calcium Magnesium Zinc with Vitamin D3NATURE	4.8 / 5	19,900	4.7 / 5
Nature's Bounty Calcium Magnesium & Zinc CapletsNature's	4.7 / 5	23,000	4.6 / 5
Caltrate 600 Plus D3 Calcium and Vitamin D Supplement TabletsCaltrate	4.7 / 5	16,400	4.6 / 5
Citracal Slow Release- Calcium 1200 mg with Vitamin D3Citracal	4.7 / 5	11,909	4.6 / 5

Frequently asked

Questions about the Nature’s 7087

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

Does it contain shellfish-derived ingredients?

The listing notes molluscs as an allergen.

How much vitamin D3 is included?

400 IU per the listed formulation.

How many tablets are in the bottle?

300.