Certified organic, plant-based calcium sourced from mineral-rich red algae (Lithothamnion sp.) with naturally occurring co-minerals plus vitamins D₃ & K₂ to support bones, muscles, and nerves.* Produced in FDA-registered, GMP-certified facilities and 3rd-party lab tested for purity, potency & label accuracy.*
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. In addition, we reference reviews from 39 leading health organizations and insights from 20 top global universities to ensure our guidance aligns with credible science.*
Clinically Studied Benefits (with research)
- Fracture risk (selected populations) — Calcium + Vitamin D lowered total fractures (~15%) and hip fractures (~30%) in pooled analyses of RCTs; greatest benefit in older adults with low baseline intake. (NLM/PMC — Weaver, 2015)
- Calcium absorption — Vitamin D regulates intestinal transport and skeletal mineralization (mechanistic & human-relevant reviews). (NLM/PMC — Christakos, 2011; NIH/PubMed — Fleet, 2022)
- Plant-mineral matrix — Red-algae multi-mineral preserved bone structure and improved quality in controlled animal models. (NLM/PMC — Aslam, 2010; NLM/PMC — Aslam, 2013)
- Human pilot — Aquamin® (algae calcium) altered calcium-handling markers vs calcium carbonate in a crossover study. (NIH/PubMed — Zenk, 2018)
- Magnesium & bone — Intake associated with higher hip/femoral-neck BMD; narrative review summarizes mechanisms and human data. (NIH/PubMed — Groenendijk, 2022; NLM/PMC — Rondanelli, 2021)
- Vitamin K₂ (MK-7) — 3-year RCT reported reduced age-related decline in BMD and improved bone-strength indices; additional RCT showed favorable hip geometry. (NIH/PubMed — Knapen, 2013; NIH/PubMed — Knapen, 2007)
- Boron & trace minerals — Reviews note roles in calcium/magnesium handling and vitamin-D utilization relevant to bone. (NLM/PMC — Pizzorno, 2015; NIH/PubMed — Gaffney-Stomberg, 2019)
Additional Potential Benefits*
University Studies
- Harvard T.H. Chan — Vitamin D — Overview of vitamin D’s role in bone health and fracture risk context. (Harvard Nutrition Source)
- Harvard T.H. Chan — Calcium — Guidance on calcium, sources, and bone outcomes. (Harvard Nutrition Source)
- Oregon State University — Linus Pauling Institute — Evidence reviews for calcium and magnesium in bone health. (LPI Calcium; LPI Magnesium)
Global Evidence & Authoritative Reviews
- Cochrane Review — Vitamin D with calcium lowers fracture incidence vs vitamin D alone. (Cochrane, 2014)
- NIH Office of Dietary Supplements — Evidence-based intake ranges, ULs, and interactions for calcium & magnesium. (NIH ODS — Calcium; NIH ODS — Magnesium)
- Mayo & Cleveland Clinic — Patient-friendly overviews on calcium/vitamin D and bone health (useful for counseling/risks/interactions). (Mayo Clinic; Cleveland Clinic)
Institutional Monitoring: We monitor research from the world’s leading institutions — including Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge University, Oxford, Stanford, Yale, MIT, the University of Florida, Oregon State University – Linus Pauling Institute, Boston University, Cornell, Columbia, and Ohio State — to ensure our guidance remains aligned with the highest standards of credible science.*
Brief Benefit Bullets
- Plant-sourced calcium from red algae supports bone health*
- Vitamin D₃ helps calcium absorption & utilization*
- Vitamin K₂ (MK-7) helps maintain bone strength in adults*
- Magnesium intake is associated with higher hip BMD*
- Includes supportive trace minerals (e.g., boron) for mineral metabolism*
- Whole-source mineral matrix for holistic bone support*
- 3rd-party lab tested for purity, potency & accuracy*
Product Specifications
- Serving Size — 3 tablets;
- Vitamin D₃ (from organic algae) — 25 mcg (1,000 IU)
- Calcium (from organic Icelandic red algae; Aquamin®) — 1,000 mg
- Iron (from organic red algae; Aquamin®) — 2 mg
- Magnesium (from organic red algae; Aquamin®) — 70 mg
- Strontium (from organic red algae; Aquamin®) — 5 mg
- Vitamin K₂ (as menaquinone-7) — 120 mcg
- Boron (from organic red algae; Aquamin®) — 60 mcg
- Vanadium (from organic red algae; Aquamin®) — 10 mcg
- Other Ingredients — Organic agave inulin powder, organic tapioca dextrose, organic medium-chain triglycerides, organic coating (organic tapioca maltodextrin, organic sunflower lecithin, organic palm oil, organic guar gum), silica, organic guar gum powder.
Suggested Use
Use as directed on the product label, or as advised by your healthcare professional. Do not exceed recommended dose. If pregnant, nursing, taking medications, or have a medical condition, consult your physician. Separate calcium from certain medications (e.g., some antibiotics, thyroid meds) by 1–2 hours.*
Produced in FDA-registered, GMP-certified facilities and
3rd-party lab tested for purity & potency.*
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.
Organic Plant Calcium — Vegan Tablets Plant-sourced calcium from red algae with co-minerals plus vitamins D₃ & K₂. 3rd-party tested. Clinically Studied Ingredients — NIH/PubMed!*
