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Magnesium Oxide Tablets 400 mg

product on market Tablet or Pill Qualitest 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

Magnesium is essential for muscle function and nerve transmission, with strong evidence supporting its role in managing magnesium deficiency. Research indicates it may also assist in regulating blood glucose and blood pressure. The evidence for these specific physiological benefits is well-established across clinical studies.

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

Label

Product Label

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

Label Data

1 Tablet(s)
Serving Size
120
Servings
Mineral
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

240 mg (60% DV)
Within RDA (0.6× RDA) 316 studies (A:8, B:159)

Other Ingredients

Silicon Dioxide, Colloidal Croscarmellose Sodium Microcrystalline Cellulose Stearic Acid
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions Antacid Directions: take 1 tablet twice a day or as directed by a physician Magnesium Supplement Directions: take 1 to 2 tablets daily or as directed by a physician

Warnings & Precautions

Warnings: Ask a doctor before use if you have kidney disease

Ask a doctor or pharmacist before use if you are taking a prescription drug. Antacids may interact with certain prescription drugs.

Do not take more than 2 tablets in a 24 hour period or use the maximum dosage of this product for more than two weeks, except under the advice and supervision of a physician. May have a laxative effect.

If pregnant or breast feeding, ask a health professional before use.

Keep out of reach of children.

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

Formulation Notes

240 mg elemental Magnesium per tablet

Sugar and gluten free

Magnesium content per tablet: 240 mg

Use Relieves Acid indigestion Upset stomach

Additional Information

NDC 0603-0209-22

Other information Store at controlled room temperature 59 degrees-86 degrees Fahrenheit (15 degrees-30 degrees Celsius)

N

Metadata

Product Details

UPC / SKU3 0603-0209-22 3
DSLD Entry Date2020-11-21
Product TypeMineral
FormTablet or Pill
BrandQualitest
DSLD ID240151
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.