Cal-Mag with Vitamin D₃ & Zinc — Softgels — Bone, Muscle & Immune Support*
Our Cal-Mag with Vitamin D₃ & Zinc combines calcium, magnesium, vitamin D₃, and zinc in easy-to-swallow softgels to support strong bones, promote healthy muscle and nerve function, help maintain immune system wellness, support calcium absorption and utilization, promote bone mineralization and density, provide neuromuscular support, help maintain overall skeletal health, support vitamin D-enhanced mineral balance, promote zinc's role in immune cell function, help maintain muscle relaxation and energy metabolism, and support comprehensive bone, muscle, and immune health* — while respecting balanced nutrient 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 in RCTs and meta-analyses.*
NIH/PMC — Weaver et al., 2015
✓ Promotes enhanced calcium absorption with vitamin D* — Vitamin D regulates intestinal calcium transport and supports bone mineralization in clinical overviews.*
NIH/ODS — Vitamin D Fact Sheet
✓ Helps maintain bone mineral density with magnesium support* — Magnesium status associates with bone health and is required for vitamin D activation in human studies.*
NIH/ODS — Magnesium Fact Sheet
✓ Supports normal immune function with zinc* — Zinc is essential for immune cell development and function in authoritative reviews.*
NIH/ODS — Zinc Fact Sheet
✓ Promotes muscle relaxation and neuromuscular signaling* — Magnesium supports muscle relaxation and nerve function in clinical summaries.*
NIH/ODS — Magnesium Fact Sheet
✓ Supports bone strength in context-dependent populations* — Calcium and vitamin D combinations show fracture benefit in select older-adult groups.*
NIH/PubMed — Avenell et al., 2014 (Cochrane)
✓ Helps maintain healthy nerve signaling* — Calcium and magnesium are critical for neurotransmission and action potentials.*
NIH/ODS — Calcium Fact Sheet
Additional / Promising Evidence
✓ May support modest blood pressure effects with magnesium* — Meta-analyses report small reductions in blood pressure with magnesium, varying by baseline.*
NIH/PubMed — Zhang et al., 2016
✓ Contributes to mood and well-being associations* — Low vitamin D status linked with mood outcomes in observational reviews.*
NIH/PMC — 2020 Review
✓ Promotes glucose metabolism support with magnesium* — Magnesium status associates with insulin and glucose homeostasis in human data.*
NIH/ODS — Magnesium Fact Sheet
✓ May reduce common cold duration with zinc* — Zinc lozenges show reduced duration in some analyses; form-specific.*
NIH/PubMed — Cochrane, 2011
✓ Supports modest fall reduction in older adults* — Calcium + vitamin D associated with small fall reductions in some analyses.*
NIH/PMC — Zhao et al., 2018
✓ Contributes to synergistic nutrient roles in bone/immune health* — Complementary functions of calcium, magnesium, vitamin D, and zinc in mineral balance and immunity.*
NIH/ODS — Calcium Fact Sheet
University-Led & Academic Studies
✓ Supports fracture prevention with calcium + vitamin D* — University-affiliated meta-analyses and RCTs confirm benefits in select older populations.*
NIH-indexed — Harvard/Johns Hopkins/Cochrane Summaries
✓ Promotes bioavailability with citrate forms* — Academic comparative studies show advantages for calcium citrate absorption.*
NIH/PubMed — Heaney/Sakhaee Studies
✓ Supports bone and immune roles with zinc and magnesium* — University-linked reviews highlight zinc in immunity and magnesium in skeletal health.*
NIH-indexed — Linus Pauling Institute/Related Summaries
Global Evidence & Reviews
✓ Confirms calcium and vitamin D roles in bone health* — NIH/ODS monographs detail functions, absorption, and fracture contexts.*
NIH/ODS — Calcium Fact Sheet
✓ Supports magnesium in neuromuscular and bone support* — Authoritative summaries outline relaxation and skeletal roles.*
NIH/ODS — Magnesium Fact Sheet
✓ Aligns with zinc evidence for immune function* — Reviews synthesize zinc's essential role in immune cell development.*
NIH/ODS — Zinc 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* — Elemental from complex of carbonate & citrate — Supports bone strength and mineralization.*
-
Magnesium* — Elemental from complex of oxide & citrate — Supports muscle relaxation and nerve function.*
-
Vitamin D₃ (as cholecalciferol)* — Enhances calcium absorption and bone health.*
-
Zinc* — Elemental from oxide — Supports immune function and tissue repair.*
Brief Benefit Bullets
- Supports bone strength & density*
- Promotes healthy muscle & nerve function*
- Vitamin D₃ aids optimal calcium absorption*
- Zinc supports immune function & tissue repair*
- Magnesium for energy production & cardiovascular support*
- Easy-to-swallow softgels for convenient daily use
- Clean label — not manufactured with common allergens (see label)*
- Made in GMP facilities with strict quality controls*
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3rd-party tested for purity, potency & accuracy
Suggested Use
Take 2 softgels daily with meals, or as directed by your healthcare professional. Separate calcium/minerals from certain medications by 1–2 hours.*
Product Specifications
- Serving Size — 2 softgels
- Vitamin D₃ (as cholecalciferol, from lanolin) — 10 mcg (400 IU) — 50% DV
- Calcium (elemental) — 667 mg (from 1,797 mg complex of Calcium Carbonate & Citrate) — 51% DV
- Magnesium (elemental) — 333 mg (from 590 mg complex of Magnesium Oxide & Citrate) — 79% DV
- Zinc (elemental) — 25 mg (from 41 mg Zinc Oxide) — 227% DV
- Other Ingredients — Rice bran oil; softgel capsule [bovine gelatin (BSE-free), glycerin, water, zinc oxide]; sunflower lecithin; beeswax
- Allergen Note — Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or sesame. Produced in a GMP facility that processes other ingredients containing these allergens. Store in a cool, dry place after opening.
- 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.
LifeSource Vitamins Cal-Mag with Vitamin D₃ & Zinc — Softgels. Bone, muscle & immune support with calcium, magnesium, vitamin D₃, and zinc. 3rd-party tested; NIH/PubMed referenced. Clinically Studied Ingredients — NIH/PubMed!*
