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Dyna-Cal Extra-Strength Natural Calcium/Magnesium Complex

product on market Tablet or Pill Douglas Laboratories Safety: 85/100
85/100

This product is generally safe

  • Magnesium: 420mg is 1.2× the Tolerable Upper Intake Level (350mg)
  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 38% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Calcium and magnesium support bone density and muscle function, while vitamins C, D3, and E provide antioxidant support and aid calcium absorption. There is strong evidence for these nutrients in maintaining skeletal health. However, the overall evidence coverage for this specific formulation is limited.

AI-generated summary based on research evidence. Not medical advice.

Alerts

Safety Alerts

Magnesium: 420mg is 1.2× the Tolerable Upper Intake Level (350mg)

Contains proprietary blend — exact ingredient amounts not disclosed

Label

Product Label

Label for Dyna-Cal Extra-Strength Natural Calcium/Magnesium Complex
Open Full PDF View on NIH DSLD →
Details

Label Data

4 Tablet(s)
Serving Size
62
Servings
Other Combinations
Product Type
38%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
80 mg (133% DV)
1000 IU (250% DV)
1.7× RDA — within safe limits 608 studies (A:16, B:251)
20 IU (67% DV)
Within RDA (0.9× RDA) 179 studies (A:3, B:90)
Calcium
1500 mg (150% DV)
420 mg (105% DV)
Exceeds UL by 1.2× (UL: 350 mg) 316 studies (A:8, B:159)
10 mg (500% DV)
4.3× RDA — above typical dose (UL: 11 mg) 9 studies — no high-quality reviews
Proprietary Blend
120 mg
400 mcg
Market median: 3.0mg (58 products) 3 studies — no high-quality reviews

Other Ingredients

Cellulose Vegetable Stearate Silica
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Info

Product Information

Directions for Use

Suggested Usage: As a dietary supplement, adults take 4 tablets daily with meals or as directed by physician.

Warnings & Precautions

Tamper resistant package, do not use if outer seal is missing.

KEEP OUT OF REACH OF CHILDREN.

Formulation Notes

This product contains NO yeast, wheat, gluten, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.

Additional Information

Formula #80261

For optimal storage conditions, store in a cool, dry place. (59(0)-77(0)F/15(0)-25(0)C) (35-65% relative humidity)

Metadata

Product Details

UPC / SKU3 10539 01239 0
DSLD Entry Date2012-06-01
Product TypeOther Combinations
FormTablet or Pill
BrandDouglas Laboratories
DSLD ID9832
Data Updated2026-04-11
Research

Research Evidence

849
Research Sources
56
Avg Quality
450
Meta Analysis
152
Rct
137
Systematic Review
73
Clinical Trial
11
Regulatory Source
7
Other
7
Guideline
3
Openfda Safety
2
Cochrane Review
2
Observational
A Phosphate binders for preventing and treating chronic kidney disease-mineral and bone disorder (CKD-MBD)
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Calcium supplementation during pregnancy for preventing hypertensive disorders and related problems
Meta Analysis The Cochrane database of systematic reviews 2025 PubMed DOI
A Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps
Systematic Review The Cochrane database of systematic reviews 2008 PubMed DOI
A Calcium and vitamin D for increasing bone mineral density in premenopausal women
Systematic Review The Cochrane database of systematic reviews 2023 PubMed DOI
A Dietary sodium, sodium-to-potassium ratio, and risk of stroke: A systematic review and nonlinear dose-response meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2019 PubMed DOI
A The association between circulating magnesium and clinically relevant outcomes in patients with chronic kidney disease: A systematic review and meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2021 PubMed DOI
A Calcium channel blockers versus other classes of drugs for hypertension
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
View all evidence for Electrolytes →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.