Home/ Supplements/ Magnesium Oxide/ Magnesium Oxide 400 mg

Magnesium Oxide 400 mg

product on market Tablet or Pill Rugby Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

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

Elemental magnesium supports muscle and nerve function, as well as biochemical reactions in the body. There is strong evidence for its role in maintaining healthy physiological processes. This specific formulation provides a standard dose of magnesium oxide.

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

Label

Product Label

Label for Magnesium Oxide 400 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Mineral
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

240 mg (57% DV)
Within RDA (0.6× RDA) 316 studies (A:8, B:159)

Other Ingredients

Microcrystalline Cellulose Stearic Acid pregelatinized Corn Starch Croscarmellose Sodium Sodium Starch Glycolate Magnesium Stearate
Claims

Label Claims — Verification

Unverified All Other
Info

Product Information

Directions for Use

Directions: Adults: take one tablet daily with a meal, as a dietary supplement or as directed by a doctor.

Warnings & Precautions

Tamper resistant - Do not use if imprinted safety seal under cap is broken or missing

Drug Interaction Precaution: This product may interact with certain prescription drugs. If you are presently taking a prescription drug, do not take this product without consulting your doctor or other health professional.

Warning: Not recommended for use in amounts over the recommended daily intake at 400 mg per day (1 tablet).

Ask a doctor or pharmacist before use if you have a known allergy to this product. Stop use and contact a doctor if an allergic reaction occurs.

Consult a doctor before using this product if you have kidney disease, or are pregnant or nursing a baby.

May have a laxative effect.

Keep out of reach of children

Additional Information

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

Rev. 12/16 R-95 Re-order No. 370170

Metadata

Product Details

UPC / SKU0 05363 52141 4
DSLD Entry Date2019-04-25
Product TypeMineral
FormTablet or Pill
BrandRugby
DSLD ID200784
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 →
Compare

Similar Products

View all Magnesium Oxide products →

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