US
sapling

sapling Calcium Supplement

  • Calcium
  • Capsule
  • 90
  • Bone & Joint Support
4.6/ 5 on Amazon1,100Amazon ratings1,000+bought last month4.3ProductDome score
High confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology
Best forYou want a plant-based calcium source bundled with K2, D3, magnesium and zinc

A whole food, algae-sourced calcium complex for buyers who want cofactor nutrients bundled in rather than plain calcium alone.

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ProductDome scorecard

How it ranks among the 107 calcium we track

4.3/ 5ProductDome scoreHigh confidence
Owner satisfaction · 56% of scorecategory median 4.6★4.6

4.6★ across 1,100 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 1,800 ratings3.8

1,100 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score4.1

1,000+ 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

Sapling's calcium supplement is a whole food mineral complex built around calcium sourced from red algae, combined with vitamin K2, D3, magnesium, zinc and boron, sold as a 90 capsule bottle for bone strength support.

The red algae sourcing is the notable choice here: it is a plant-based calcium source rather than the more common calcium carbonate or citrate, paired with cofactor nutrients (K2, D3, magnesium) that the body needs to direct calcium into bone rather than soft tissue.

  • Red algae calcium source
  • Includes K2, D3, magnesium, zinc, boron
  • 90 capsules
  • Non-GMO, vegan

Who it's for

Suited to people who specifically want a plant-based, whole food calcium source with supporting cofactors rather than a bare calcium carbonate tablet. Less suited to anyone who needs a higher elemental calcium dose than a mineral complex capsule typically provides.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out
  • Plant-based calcium from red algae
  • Includes K2, D3, magnesium, zinc and boron
  • Non-GMO and vegan
  • Unflavored capsule format
What to check first
  • Elemental calcium amount not specified
  • 90 capsules may require multiple daily doses, shortening how long the bottle lasts
  • No description or reviews to confirm real-world tolerance

Performance notes

Pairing calcium with vitamin K2 and D3 in the same capsule reflects how these nutrients work together: D3 supports calcium absorption while K2 helps direct it toward bone rather than arteries, which is the reasoning behind bundling them instead of dosing calcium alone.

Specifications

Brandsapling
Model00856252008192
FormCapsule
Count90
BenefitsBone & Joint Support
FlavorUnflavored

How it compares

This product against the closest alternatives we track in calcium.

ProductAmazon ratingRatingsProductDome score
sapling Calcium SupplementThis product4.6 / 51,1004.3 / 5
Nature Made Calcium Magnesium Zinc with Vitamin D3NATURE4.8 / 519,9004.7 / 5
Nature's Bounty Calcium Magnesium & Zinc CapletsNature's4.7 / 523,0004.6 / 5
Caltrate 600 Plus D3 Calcium and Vitamin D Supplement TabletsCaltrate4.7 / 516,4004.6 / 5
Citracal Slow Release- Calcium 1200 mg with Vitamin D3Citracal4.7 / 511,9094.6 / 5
Frequently asked

Questions about the sapling 00856252008192

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

Where does Sapling source its calcium from?

It is sourced from red algae, a plant-based alternative to calcium carbonate or citrate.

What other nutrients are in this formula?

The complex includes vitamin K2, vitamin D3, magnesium, zinc and boron alongside the calcium.

Is this calcium supplement vegan?

Yes, it is labeled Non-GMO and Vegan.