Algae Calcium — Plant-Based Calcium from Red Marine Algae (with D₃, K₂, Magnesium & Trace Minerals)*
Our Algae Calcium combines sustainably sourced red marine algae (Lithothamnion sp.) with naturally occurring magnesium and trace minerals, plus vitamin D₃ (from organic algae) and vitamin K₂ (MK-7) in tablets to support healthy bone mineralization, promote skeletal health, help maintain muscle and nerve function, support calcium absorption and utilization, promote bone density maintenance, provide plant-based mineral support for overall bone wellness, support osteocalcin activation and bone strength, promote neuromuscular relaxation, help maintain healthy fracture risk reduction in context, support vitamin D-enhanced intestinal calcium uptake, and promote comprehensive skeletal and mineral balance* — while respecting natural marine sources. Produced in FDA-registered, GMP-certified facilities and 3rd-party lab tested for purity and potency by LifeSource Vitamins.
Research-Driven & Verified Product.
Explore the clinical research, ingredient science, and global evidence supporting this product below.
Research Promise: At LifeSource Vitamins, our commitment is rooted in research and results. Every benefit below is supported by human clinical studies indexed in the National Institutes of Health (NIH) via PubMed, with full texts available in the National Library of Medicine (NLM) PubMed Central (PMC) when available. We also reference reviews from 39 leading health organizations and insights from 20 top global universities to keep our guidance aligned with credible, evidence-based science.* Every claim is supported by peer-reviewed human RCTs or meta-analyses whenever available.
Clinically Studied Benefits
✓ Supports reduction in fracture risk in older adults* — Calcium plus vitamin D supplementation lowers fracture incidence in institutional and elderly populations in randomized controlled trials.*
NIH/PubMed — Chapuy et al., 1992
✓ Promotes fracture prevention with calcium and vitamin D* — Combined supplementation supports prevention of fractures in adults aged 50 and older in meta-analyses.*
NIH/PubMed — Tang et al., 2007
✓ Helps maintain lower total fracture rates* — Calcium with vitamin D associated with approximately 15% reduction in total fractures in pooled analyses.*
NIH/PubMed — Weaver et al., 2016
✓ Supports reversal of secondary hyperparathyroidism and hip bone loss* — Calcium plus vitamin D₃ reduced secondary hyperparathyroidism and hip bone loss/fracture risk in elderly women in clinical studies.*
NIH/PubMed — Chapuy et al., 2002
✓ Promotes enhanced calcium absorption with vitamin D support* — Vitamin D status improves intestinal calcium absorption and mineral balance in human physiology.*
NIH/ODS — Vitamin D Fact Sheet
✓ Supports improved osteocalcin carboxylation and bone strength* — Long-term vitamin K₂ (MK-7) supplementation enhanced vitamin K status and attenuated age-related bone mineral density decline in postmenopausal women.*
NIH/PubMed — Knapen et al., 2013
✓ Helps maintain bone formation and neuromuscular function* — Adequate magnesium supports skeletal health and muscle/nerve function in clinical and review evidence.*
NIH/ODS — Magnesium Fact Sheet
✓ Promotes better calcium absorption in varied conditions* — Calcium citrate shows higher absorption compared to carbonate, particularly in fasting or specific contexts.*
NIH/PubMed — Sakhaee et al., 1999
Additional / Promising Evidence
✓ May support favorable bone turnover with mineral-rich algae* — Early human and translational studies on Aquamin/Lithothamnion report positive effects on bone markers compared to common salts.*
NIH/PMC — Aslam et al., 2010
✓ Promotes vegan vitamin D₃ sourcing from algae* — Reviews confirm D₃ presence in microalgae supporting plant-based supplementation.*
NIH/PMC — Jäpelt et al., 2013
✓ Contributes to better bone mineral density with magnesium* — Observational and human data link higher magnesium status/intake to favorable BMD outcomes.*
NIH/ODS — Magnesium Fact Sheet
✓ Supports comparable absorption with meals in formulations* — Some studies indicate similar absorption for calcium forms when taken with food.*
NIH/PubMed — Heaney et al., 1999
✓ May aid overall mineral balance with trace elements* — Naturally occurring traces like strontium/vanadium in algae complexes provide supportive context.*
NIH/ODS — Trace Minerals Overview
✓ Aligns with safety and dosing guidance for bone nutrients* — Authoritative monographs summarize upper limits and interactions for calcium, D, magnesium, K.*
NIH/ODS — Calcium Fact Sheet
University-Led & Academic Studies
✓ Supports fracture prevention and bone health with calcium + D* — University-affiliated RCTs and analyses confirm benefits in older populations.*
NIH-indexed — Harvard/Johns Hopkins Summaries
✓ Promotes osteocalcin activation with vitamin K₂* — Academic RCTs show MK-7 improves carboxylation and bone quality markers.*
NIH-indexed — Related University Bone Research
✓ Supports skeletal outcomes with magnesium status* — University-linked observational data link magnesium to better BMD.*
NIH-indexed — Linus Pauling Institute/Magnesium Studies
Global Evidence & Reviews
✓ Confirms calcium + D benefits for bone health* — NIH/ODS and global reviews detail absorption, fracture reduction, and safety.*
NIH/ODS — Calcium Fact Sheet
✓ Supports vitamin D role in mineral balance* — Authoritative summaries emphasize enhanced calcium uptake and skeletal support.*
NIH/ODS — Vitamin D Fact Sheet
✓ Aligns with magnesium evidence for bone and muscle function* — Reviews highlight roles in skeletal health and neuromuscular support.*
NIH/ODS — Magnesium Fact Sheet
We monitor research from leading institutions —
Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge, Oxford, Stanford, Yale, Tufts, University of Florida, Oregon State University – Linus Pauling Institute, Columbia, Cornell, Ohio State — to align with credible science.*
Key Ingredients
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Calcium (from Aquamin® red marine algae)* — 930 mg — Plant-based source with natural cofactors for bone mineralization support.*
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Magnesium (from Aquamin® red marine algae)* — 68 mg — Supports bone formation and muscle/nerve function.*
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Vitamin D₃ (from organic algae, VegD3®)* — 25 mcg (1,000 IU) — Enhances calcium absorption.*
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Vitamin K₂ (as menaquinone-7)* — 80 mcg — Supports osteocalcin activation for bone strength.*
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Trace Minerals (from Aquamin®)* — Including strontium (5 mg) and vanadium (30 mcg) — Naturally occurring for comprehensive mineral support.*
Brief Benefit Bullets
- Plant-based calcium from red marine algae (Lithothamnion) with naturally occurring magnesium & trace minerals*
- With vitamin D₃ (algal) for absorption and vitamin K₂ (MK-7) for osteocalcin activation*
- Supports bone mineralization, muscle relaxation & nerve function*
- Whole-food mineral matrix; vegan-friendly*
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3rd-party lab tested for identity, potency & purity
Suggested Use
See product label for full instructions, or as directed by a healthcare professional. Do not exceed recommended dose. If pregnant, nursing, taking medications, or have a medical condition, consult your physician.*
Product Specifications
Serving Size — 3 Tablets
Servings Per Container — 30
Vitamin D₃ (from organic algae, VegD3®) — 25 mcg (1,000 IU) — 125% DV
Calcium (from Aquamin® red algae) — 930 mg — 72% DV
Magnesium (from Aquamin® red algae) — 68 mg — 16% DV
Organic Veggie & Fruits Blend — 25 mg — **
Strontium (from Aquamin®) — 5 mg — **
Vitamin K₂ (as menaquinone-7) — 80 mcg — **
Vanadium (from Aquamin®) — 30 mcg — **
Other Ingredients — Stearic acid, magnesium stearate, cellulose gum, cellulose, silica
Quality — Third-party tested for identity, potency & purity
LifeSource Vitamins — Proudly American — Since 1992
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Algae Calcium with D₃, K₂, magnesium & trace minerals supports bone mineralization, muscle/nerve function; vegan source; 3rd-party tested. Clinically Studied Ingredients — NIH/PubMed!*
