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Dyna-Cal

product on market Tablet or Pill Douglas Laboratories Safety: 96/100
96/100

This product looks safe

  • Magnesium: 420mg is 1.2× the Tolerable Upper Intake Level (350mg)
  • 44% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Calcium and vitamin D3 have strong evidence for supporting bone density and mineral absorption. Magnesium and vitamins C and E provide antioxidant support and contribute to neuromuscular function. Research generally supports these ingredients for skeletal and cellular health.

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

Alerts

Safety Alerts

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

Label

Product Label

Label for Dyna-Cal
Open Full PDF View on NIH DSLD →
Details

Label Data

4 Tablet(s)
Serving Size
25
Servings
Other Combinations
Product Type
44%
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
400 mcg
Market median: 3.0mg (58 products) 3 studies — no high-quality reviews
80 mg
Market median: 496.0mg (192 products) 20 studies — no high-quality reviews
Market median: 4002.0mg (1 products) 21 studies (A:0, B:2)

Other Ingredients

Cellulose Croscarmellose Sodium Stearic Acid Vegetable Stearate Silica Coating
Claims

Label Claims — Verification

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 a healthcare professional.

Warnings & Precautions

KEEP OUT OF REACH OF CHILDREN.

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

Formulation Notes

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

Extra-Strength Calcium/Magnesium Complex

Additional Information

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

Formula #202036

Metadata

Product Details

UPC / SKU3 10539 04038 6
DSLD Entry Date2016-02-23
Product TypeOther Combinations
FormTablet or Pill
BrandDouglas Laboratories
DSLD ID57016
Data Updated2026-04-11
Research

Research Evidence

371
Research Sources
54
Avg Quality
148
Meta Analysis
82
Systematic Review
71
Rct
62
Clinical Trial
2
Regulatory Source
1
Cochrane Review
1
Narrative Review
1
Other
1
Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024 PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021 PubMed DOI
View all evidence for Vitamin C →
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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.