Cal-Mag Powder — Calcium & Magnesium with Vitamin D₂ (Citrate Forms)*
Our Cal-Mag Powder combines highly bioavailable citrate forms of calcium and magnesium with vitamin D₂ in unflavored powder to support healthy bones, promote muscle and nerve function, help maintain skeletal health, support calcium absorption and utilization, promote bone mineralization and density, provide neuromuscular relaxation support, help maintain overall mineral balance, support vitamin D-enhanced intestinal calcium uptake, promote comfort in muscle/nerve activity, help maintain healthy bone turnover, and support comprehensive skeletal and muscular wellness* — while respecting clean-label formulation. 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 with calcium and vitamin D* — Calcium plus vitamin D supplementation lowers fracture incidence in older adults and institutional settings in RCTs and meta-analyses.*
NIH/PubMed — Tang et al., 2007
✓ Promotes fracture prevention in adults over 50* — Combined calcium and vitamin D supports fracture prevention in meta-analyses of older populations.*
NIH/PubMed — Avenell et al., 2014
✓ Helps maintain healthy bone mineralization and density* — Adequate calcium and vitamin D support bone health and mineral balance in clinical overviews.*
NIH/ODS — Calcium Fact Sheet
✓ Supports muscle contraction and nerve signaling* — Calcium mediates muscle contraction and neuromuscular transmission in physiological reviews.*
NIH/ODS — Calcium Fact Sheet
✓ Promotes muscle relaxation and neuromuscular function* — Magnesium supports relaxation and nerve signaling in clinical and authoritative summaries.*
NIH/ODS — Magnesium Fact Sheet
✓ Helps maintain enhanced calcium absorption with vitamin D* — Vitamin D improves intestinal calcium uptake and mineral homeostasis in human studies.*
NIH/ODS — Vitamin D Fact Sheet
✓ Supports better bioavailability with citrate forms* — Calcium citrate demonstrates higher absorption than carbonate in various conditions in comparative studies.*
NIH/PubMed — Sakhaee et al., 2001
Additional / Promising Evidence
✓ May support modest blood pressure effects with magnesium* — Meta-analyses show small reductions in blood pressure with magnesium supplementation, varying by baseline.*
NIH/PubMed — Zhang et al., 2016
✓ Contributes to tooth and enamel mineralization support* — Adequate calcium and vitamin D aid tooth mineral maintenance in authoritative overviews.*
NIH/MedlinePlus — Calcium Overview
✓ Promotes favorable absorption with citrate in meal contexts* — Studies indicate comparable or enhanced absorption for citrate forms with food.*
NIH/PubMed — Heaney et al., 1999
✓ Supports overall mineral balance in formulations* — Citrate forms provide bioavailable support for bone, muscle, and nerve health in clinical contexts.*
NIH/ODS — Calcium Fact Sheet
University-Led & Academic Studies
✓ Supports fracture risk reduction with calcium + vitamin D* — University-affiliated meta-analyses and RCTs confirm benefits in select older populations.*
NIH-indexed — Cochrane/Related Academic Summaries
✓ Promotes bioavailability advantages with citrate forms* — Academic comparative studies show enhanced absorption for calcium citrate.*
NIH/PubMed — Heaney/Sakhaee Studies
✓ Supports skeletal and neuromuscular roles for magnesium* — University-linked reviews highlight magnesium in bone formation and nerve function.*
NIH/ODS — Magnesium Fact Sheet (Academic Contributions)
Global Evidence & Reviews
✓ Confirms calcium roles in bone and muscle health* — NIH/ODS professional monograph details functions, absorption, and clinical contexts.*
NIH/ODS — Calcium Fact Sheet
✓ Supports magnesium in neuromuscular and skeletal support* — Authoritative summaries outline roles in relaxation and bone health.*
NIH/ODS — Magnesium Fact Sheet
✓ Aligns with vitamin D enhancement of calcium uptake* — Global reviews emphasize vitamin D in mineral balance and skeletal support.*
NIH/ODS — Vitamin D 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
-
Calcium (as calcium citrate)* — 600 mg — Highly bioavailable form for bone mineralization support.*
-
Magnesium (as magnesium citrate)* — 300 mg — Supports muscle relaxation and neuromuscular function.*
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Vitamin D₂ (ergocalciferol)* — 2.5 mcg (100 IU) — Enhances calcium absorption and mineral balance.*
Brief Benefit Bullets
- Calcium citrate + magnesium citrate to support bone, muscle & nerve function*
- Vitamin D₂ supports calcium absorption & mineral balance*
- Clean label: no other ingredients
- Mixable, unflavored powder; 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 — 1 Scoop (5.47 g)
Servings Per Container — 30
Vitamin D₂ (ergocalciferol) — 2.5 mcg (100 IU) — 13% DV
Calcium (as calcium citrate) — 600 mg — 46% DV
Magnesium (as magnesium citrate) — 300 mg — 71% DV
Other Ingredients — None
Form — Unflavored powder
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.
Cal-Mag Powder (citrate forms) with vitamin D₂ — supports bone, muscle & nerve health; clean label and 3rd-party tested. Clinically Studied Ingredients — NIH/PubMed!*
