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Magnesium & Calcium

product on market Tablet or Pill NOW Safety: 90/100
90/100

This product looks safe

  • Magnesium: 800mg is 2.3× the Tolerable Upper Intake Level (350mg)
  • 75% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Calcium, magnesium, and vitamin D3 have strong evidence supporting bone density and mineral homeostasis. Zinc provides moderate evidence for supporting immune function and metabolic processes. The combination focuses on essential micronutrients with a high safety profile.

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

Alerts

Safety Alerts

Magnesium: 800mg is 2.3× the Tolerable Upper Intake Level (350mg)

Label

Product Label

Label for Magnesium & Calcium
Open Full PDF View on NIH DSLD →
Details

Label Data

3 Tablet(s)
Serving Size
83
Servings
Other Combinations
Product Type
75%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

25 mcg (125% DV)
1.7× RDA — within safe limits 608 studies (A:16, B:251)
Calcium
400 mg (31% DV)
800 mg (190% DV)
Exceeds UL by 2.3× (UL: 350 mg) 316 studies (A:8, B:159)
15 mg (136% DV)
1.4× RDA — within safe limits 263 studies (A:6, B:134)

Other Ingredients

Microcrystalline Cellulose Maltodextrin Croscarmellose Sodium Stearic Acid Vegetarian Coating Magnesium Stearate Silicon Dioxide
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Usage: Take 3 tablets daily, preferably in divided doses, with food or at bedtime.

Warnings & Precautions

Caution: For adults only.

Consult physician if pregnant/nursing, taking medication, or have a medical condition.

Keep out of reach of children.

Not manufactured with wheat, gluten, soy, milk, egg, fish or shellfish ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Formulation Notes

The reverse ratio formula is formulated to provide higher levels of magnesium for those who desire the nerve, muscle and bone supporting effects of this essential mineral. Zinc and vitamin D-3 are included in this product for their roles in bone metabolism.

Natural color variation may occur in this product.

Nerve and bone support Reverse 2:1 ratio

With Zinc and Vitamin D-3

Non-GMO

Triangle K

Not manufactured with wheat, gluten, soy, milk, egg, fish or shellfish ingredients.

Additional Information

Store in a cool, dry place after opening.

Triangle K

Minerals Family owned since 1968.

GMP Quality Assured

Metadata

Product Details

UPC / SKU7 33739 01278 4
DSLD Entry Date2019-12-22
Product TypeOther Combinations
FormTablet or Pill
BrandNOW
DSLD ID210416
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.