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Magnesium Oxide

product on market Capsule Nutricost 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 managing certain deficiencies. However, the low evidence coverage for this specific formulation suggests limited data on its efficacy. Potential safety concerns exist due to the low safety score, which may include gastrointestinal distress.

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 Magnesium Oxide
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
240
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

Gelatin Rice Flour Stearic Acid Vegetable Magnesium Stearate
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Recommended Use: As a dietary supplement, take 1 capsule daily with 8-10 oz of water, preferably with food, or as directed by your physician.

Warnings & Precautions

Warning: Consult your physician prior to use if you are pregnant or nursing.

Discontinue use and consult your doctor if any adverse reactions occur.

Keep out of reach of children.

Do not use if safety seal is broken.

Formulation Notes

Magnesium Oxide 420 mg of Magnesium 750 mg per serving

Non GMO Gluten free product

Additional Information

Store in a cool dry place.

Nutricost Quality guaranteed 3rd party tested

Metadata

Product Details

UPC / SKU7 02669 93439 8
DSLD Entry Date2020-06-24
Product TypeMineral
FormCapsule
DSLD ID223424
Data Updated2026-04-11
Research

Research Evidence

7
Research Sources
45
Avg Quality
6
Rct
1
Meta Analysis
C Effectiveness and safety of polyethylene-glycol-4000 versus sodium picosulphate plus magnesium oxide and citric acid for bowel cleansing before colonoscopy in children: A systematic review with meta-analysis
Meta Analysis Journal of pediatric gastroenterology and nutrition 2025 PubMed DOI
C A randomized controlled study of effects of dietary magnesium oxide supplementation on bone mineral content in healthy girls
Rct The Journal of clinical endocrinology and metabolism 2006 PubMed
C Senna Versus Magnesium Oxide for the Treatment of Chronic Constipation: A Randomized, Placebo-Controlled Trial
Rct The American journal of gastroenterology 2021 PubMed DOI
C The efficacy of magnesium oxide and sodium valproate in prevention of migraine headache: a randomized, controlled, double-blind, crossover study.
Rct Acta neurologica Belgica PubMed DOI
C A randomized, double-blind, placebo-controlled, multicenter study assessing the efficacy of magnesium oxide monohydrate in the treatment of nocturnal leg cramps.
Rct Nutrition journal PubMed DOI
C Comparative study between manitol and sodium picosulfate with magnesium oxide solutions in the preparation for colonoscopy.
Rct Revista do Colegio Brasileiro de Cirurgioes PubMed DOI
C Effect of magnesium oxide or citrate supplements on metabolic risk factors in kidney stone formers with idiopathic hyperoxaluria: a randomized clinical trial.
Rct Magnesium research PubMed DOI
View all evidence for Magnesium Oxide →
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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.