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Calcium & Magnesium

product on market Tablet or Pill NOW Safety: 80/100
80/100

This product is generally safe

  • Magnesium: 500mg is 1.4× the Tolerable Upper Intake Level (350mg)
  • 50% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Calcium and magnesium are essential minerals that support bone density and neuromuscular function. While research providing evidence for these benefits is strong, the overall evidence coverage for this specific formulation is limited. The profile maintains a high safety score with no significant concerns noted.

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

Alerts

Safety Alerts

Magnesium: 500mg is 1.4× the Tolerable Upper Intake Level (350mg)

Label

Product Label

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

Label Data

2 Tablet(s)
Serving Size
50
Servings
Mineral
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Calcium
1 Gram(s) (77% DV)
500 mg (119% DV)
Exceeds UL by 1.4× (UL: 350 mg) 316 studies (A:8, B:159)

Other Ingredients

Microcrystalline Cellulose Hypromellose Calcium Carbonate Polydextrose Glycerin Medium Chain Triglyceride Stearic Acid Croscarmellose Sodium Magnesium Stearate Hydroxypropyl Cellulose Silicon Dioxide
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested usage: Take 2 tablets daily. Can be taken in divided doses.

Warnings & Precautions

Caution: For adults only. Keep out of reach of children.

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

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

Formulation Notes

NOW Calcium & Magnesium combines two essential minerals that work together to maintain several critical physiological processes. They are both necessary for normal neural, muscular, and blood vessel function, as well as for the maintenance of proper bodily fluid balance. Calcium and magnesium also support the formation and maintenance of a healthy skeleton.

Natural color variation may occur in this product.

Supports bone health

High in calcium & magnesium 2:1 ratio

Triangle K (Kosher)

Made and quality tested in the USA with globally sourced ingredients.

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

Additional Information

Store in a cool, dry place after opening.

This bottle is made from 100% PCR (post-consumer recycled) resin.

GMP Quality Assured

Triangle K (Kosher)

Minerals Family owned since 1968.

Metadata

Product Details

UPC / SKU7 33739 01270 8
DSLD Entry Date2024-06-20
Product TypeMineral
FormTablet or Pill
BrandNOW
DSLD ID313640
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
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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.