ALGAECAL Organic Red Algae Calcium Supplement for Bone Density, Vitamin K2 MK7 (100mg), Vitamin D3 (1600 IU), Magnesium (350mg) & Trace Minerals & Strength, Easy to Swallow, 120 Veggie Caps Review
Our verdict
This is AlgaeCal's more built-out formula, layering K2 and a larger magnesium dose onto its algae-based calcium and D3, at the highest price point in this roundup. It's aimed at buyers who want a fuller bone-support stack and are willing to pay accordingly.
Check price on AmazonBest for
Shoppers who want an algae-sourced calcium formula that also includes K2, D3, and magnesium in one capsule.
Skip if
You're comparison shopping on price, since this is one of the most expensive options covered here.
- Form Capsule
- Count 120 Count
- Flavor Unflavored
- Type Calcium, Vitamin D3, Vitamin K2
- Diet Plant Based
- Benefits Bone & Joint Support, Bone Health, Bone Strength, Bone Density, General Health &
- Priced 325% above the category median ($19.99 across 107 tracked models)
Pros
- Combines algae-based calcium with K2, D3, and a substantial magnesium dose in one capsule
- Plant based formulation
- Large 120-count bottle
- High purchase volume for a premium-priced product, suggesting repeat buyers
Cons
- The highest price per bottle among the calcium products covered here
- More ingredients to track if you're already taking a multivitamin or other supplements
- Not a fit if you only want plain calcium
Our scorecard
-
Owner rating4.6/5
4.6 average across 1,800 owner ratings
-
Popularity2.6/5
1,800 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other home health monitors: bathroom scales, blood pressure monitors, pregnancy and ovulation tests, thermometers, body composition monitors, stethoscopes, glucose monitors and pulse oximeters we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
AlgaeCal's larger formula builds on its plant-based calcium approach by adding vitamin K2 (100 mg MK7) and a notably larger dose of magnesium (350 mg) alongside vitamin D3 (1600 IU). The 120-capsule bottle is a step up in size from the brand's smaller offering, and the label leans on bone density, bone strength, and general bone and joint support claims.
Like the rest of the AlgaeCal line, the calcium here comes from red algae rather than mined rock sources, and the capsule is unflavored and formulated as plant based. This is the more premium version of the brand's calcium lineup, both in ingredient list and in price.
Review volume is strong for a product at this price: 1,800 reviews averaging 4.6 stars, with about 6,000 units bought in the past month, suggesting a loyal base of repeat buyers despite the higher cost.
Specifications
| Form | Capsule |
|---|---|
| Count | 120 Count |
| Flavor | Unflavored |
| Type | Calcium, Vitamin D3, Vitamin K2 |
| Diet | Plant Based |
| Benefits | Bone & Joint Support, Bone Health, Bone Strength, Bone Density, General Health & |
Performance notes
This capsule expands on AlgaeCal's algae-based calcium by adding K2 (100 mg MK7), D3 (1600 IU), and 350 mg of magnesium, all marketed toward bone density and bone and joint support. It's plant based and unflavored, sold in a 120-count bottle.
What buyers say
1,800 reviews at a 4.6 average, alongside roughly 6,000 units purchased in the past month, suggest steady demand for this higher-priced, multi-ingredient formula.
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Frequently asked questions
How is this different from AlgaeCal's other calcium capsule?
This version adds vitamin K2 and a larger dose of magnesium on top of the algae-based calcium and vitamin D3, and it comes in a larger 120-count bottle. It's positioned as the more complete bone-support formula in the brand's lineup.
Why include K2 and magnesium alongside calcium?
The manufacturer markets these as complementary nutrients that work alongside calcium for bone health, though as with any supplement claim, it's worth discussing your specific needs with a healthcare professional.
Is this suitable if I already take a separate magnesium supplement?
Since this product already includes 350 mg of magnesium, check your total intake from all sources and talk to a healthcare professional before combining it with another magnesium supplement.