AlgaeCal Plus Review

AlgaeCal Plus is a plant-based calcium supplement designed to support bone health. It is formulated with algae-derived calcium, magnesium, Vitamin D3, and Vitamin K2 to help maintain and build bone density.

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Product Focus: Bone HealthAlso graded for:Healthy AgingBlood SugarThyroid Health

Tier ⓘ

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Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →

Evidence ⓘ

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How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.

Positive Reviews

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Biohacker Mentions

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Cost per month

$84

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Study, Trial or Testing Result SummaryMembersHuman studies

Vitamin K2 is given at a studied dose, and it has the evidence here. Pooled trials in women past menopause with thinning bones found it spine and forearm bone density, and another pooled analysis also found spine density. …

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Review Totals and SummaryMembers5,654 reviews

5,654 reviews · Amazon 3,492 · Algaecal 2,157 · Patientslikeme 5

Real user reviews for AlgaeCal Plus show a general trend of , with people sharing experiences, especially around perceived in bone and peace of mind. On Amazon and Algaecal's own website, a number of users mention that they chose AlgaeCal Plus after searching for a plant-based alternative to conventional calcium supplements, and reviewers say they appreciate this aspect. …

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Biohacker SummaryMembersWhat our biohacker panel says

The statements give main ingredient for this product, so the panel's comments are about smaller ingredients, and magnesium and vitamin D drew the attention. On magnesium, of the panel it, mainly for sleep, mood, stress, and as a basic part of a minimum routine. …

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RAL SummaryMembersThe tier and why

Pooled trials show it spine bone density in women past menopause with thinning bones. …

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More DetailsMembersBody systems · Combine with · Possible side effects

Body systems: Skeletal system. Combine with and possible side are for members.

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Supplement FactsVitamin C 25 mg · Vitamin D 20 mcg (800 IU) · Calcium 360 mg

Supplement Facts

Serving Size 2 Capsules

Servings Per Container 60

Amount Per Serving% Daily Value

Vitamin C (as Calcium Ascorbate)	25 mg
Vitamin D (as Cholecalciferol)	20 mcg (800 IU)
Calcium (as AlgaeCal® – Mesophyllum superpositum)	360 mg
Magnesium (as Magnesium Oxide & AlgaeCal® – Mesophyllum superpositum)	175 mg
Boron (as Boron Glycinate)	1.5 mg	†
Vitamin K2 (as Menaquinone-7)	50 mcg

† Daily Value not established.

Directions: 4 capsules daily (2 capsules twice a day with meals).

Label source: the brand's label · Report a label change

Where to BuyAlgaeCal · Amazon · Fullscript

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We sell no supplements. Prices change; check the store.

Graded October 24, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.