Home/ Supplements/ Electrolytes/ Extra Strength Magnesium 420 mg

Extra Strength Magnesium 420 mg

product on market Capsule Qunol Minerals Safety: 60/100
60/100

Review before taking

  • Magnesium: 420mg is 1.2× the Tolerable Upper Intake Level (350mg)
  • 100% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · grounded in 1 source · methodology

Magnesium supports muscle and nerve function, with strong evidence for its role in metabolic processes. However, the limited evidence coverage for this specific formulation and a safety score of 60 suggest potential concerns regarding tolerability or purity. Users should be aware of possible gastrointestinal side effects associated with high-dose magnesium.

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

Alerts

Safety Alerts

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

✨ AI-generated · Qwen 3.6 · grounded in 2 sources · methodology

This product received a low safety score because it contains 420mg of magnesium, which exceeds the recommended daily upper limit of 350mg.

Label

Product Label

Label for Extra Strength Magnesium 420 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Capsule(s)
Serving Size
60
Servings
Mineral
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

420 mg (100% DV)
Exceeds UL by 1.2× (UL: 350 mg) 316 studies (A:8, B:159)

Other Ingredients

Hydroxypropyl Methylcellulose Silicon Dioxide Magnesium Stearate
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: Adults take two (2) capsules daily with food, or as recommended by your healthcare professional.

Warnings & Precautions

Keep out of reach of children

If you are pregnant or nursing, seek the advise of a health professional before using this product.

Tamper resistant: Do not use if safety seal over cap is broken or missing. To report a serious adverse event or to obtain product information contact 1-877-290-2621.

Formulation Notes

Manufactured in a cGMP compliant USA facility.

Gluten free Non-GMO No artificial colors

Vegan

High absorption Compared to magnesium oxide capsules Extra Strength Magnesium Compared to Qunol Magnesium 200 mg gummies

Promotes nerve, bone & muscle health

Free of: milk and milk by-products, egg and egg by-products, fish and fish by-products, shellfish or shellfish by-products, wheat and wheat by-products, and peanuts or peanut by-products. Gluten free. Sugar free.

Additional Information

To preserve quality and freshness, keep bottle tightly closed. Store in a cool, dry place.

Money back guaranteed. Terms & conditions apply. See Qunol.com

Metadata

Product Details

UPC / SKU8 98440 00176 9
DSLD Entry Date2025-05-21
Product TypeMineral
FormCapsule
BrandQunol Minerals
DSLD ID328870
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 →
Compare

Similar Products

Krebs Cycle Magnesium
T/H/P/ Inc. · Capsule
100
Calcium Pangamate
Douglas Laboratories · Capsule
100
Coral Calcium 1000 mg
Bronson Laboratories · Capsule
100
Coral Calcium 1000 mg
Bronson Laboratories · Capsule
100
Sodium Selenate 200
LifeLink · Capsule
100
View all Electrolytes products →
Electrolytes research Best Electrolytes All Electrolytes products More from Qunol Minerals View on NIH DSLD →

This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.