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Magnesium Oxide Tablets 400 mg

product on market Tablet or Pill Safrel 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 and is essential for numerous biochemical reactions in the body. There is strong evidence supporting its role in maintaining healthy electrolyte balance. This formulation provides a standard dose of magnesium oxide for general supplementation.

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
200
Servings
Mineral
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

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

Other Ingredients

Croscarmellose Sodium Microcrystalline Cellulose Silicon Dioxide Stearic Acid
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Antacid Directions: Adults: Take one (1) tablet twice a day or as directed by a physician. Magnesium Supplement Directions: Adults: Take one (1) or two (2) tablets daily or as directed by a physician.

Warnings & Precautions

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: Ask a doctor 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 advise and supervision of a physician.

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

Keep out of reach of children.

Do not use if seal under cap is broken or missing

Formulation Notes

Pharmaceutical Grade Helps: Acid indigestion & upset stomach Muscle and nerve function Normal heart rhythm & blood pressure Absorption of calcium & potassium

241.3 mg of Elemental Magnesium

Free of gluten, sodium, sugar & carbohydrate

No: milk, egg, fish, crustacean shellfish, tree nuts, peanuts, yeast, artificial colors, flavors or preservatives. Non-GMO Gluten Free

Made in USA

Additional Information

NDC 71305-583-12

Storage Store at controlled room temperature 59 degrees - 86 degrees F (15 degrees-30 degrees C). Keep bottle tightly closed.

Questions or comments? Call 1-844-384-3723 9AM-5PM Monday-Friday

Metadata

Product Details

UPC / SKU3 71309 58302 1
DSLD Entry Date2024-09-25
Product TypeMineral
FormTablet or Pill
BrandSafrel
DSLD ID318384
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.