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Magnesium Oxide 500 mg

AN Amazing Nutrition Amazing Formulas
4.5
★ ★ ★ ★ ★
(960 ratings)
Magnesium 500 mg
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Score86

A simple, high-dose magnesium oxide capsule aimed at basic mineral repletion and gut health.

How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:
General Health
Digestive Health
Energy
Fitness
Testosterone Support

Score 86

A simple, high-dose magnesium oxide capsule aimed at basic mineral repletion and gut health.

How scoring works
$9.98($0.11 per serving)
iHerb
$ 10.99
Pure Formulas
$ 9.98
Vitacost
$ 11.79
Amazon
$ 9.99
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Analysis

Providing 500 mg of magnesium oxide, this capsule is a straightforward way to supplement. Magnesium oxide has a high elemental weight, meaning you get a lot of the mineral in a single small dose.

It is most commonly used to support bowel motility and ease occasional constipation. While not as bioavailable as organic salts, it remains a popular and cost-efficient choice for general wellness and structural support.

Pros

  • High elemental yield
  • Small capsule size
  • Supports digestive regularity
  • Economical price point

Cons

  • Inorganic form with low absorption
  • Laxative effect is common
  • Lacks the calming profile of glycinate

Warnings

  • Take with a full glass of water
  • Do not exceed one capsule daily without advice

Nutrient quality

69 High impact

Magnesium oxide provides high elemental weight but limited systemic bioavailability for metabolic processes. While the 500mg dose is significant, it is prone to causing loose stools before systemic repletion is achieved.

Ingredient transparency

95 Highest impact

Labeling clearly identifies the mineral form and provides the specific amount of elemental magnesium per tablet. Disclosure is adequate and follows standard industry practices for consumer information.

Customer satisfaction

93 Highest impact

Strong ratings over a high number of reviews demonstrate consistent consumer satisfaction and reliable results. Feedback confirms the product's effectiveness for general mineral support and muscle relaxation.

Value for money

89 Highest impact

Low price per serving makes this an extremely accessible option for basic mineral needs. While the cost is minimal, the use of a budget-tier mineral form represents a compromise in overall systemic quality.

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Goals

Impact
High effect
A Goal FitC Strength of SupportC+ CoverageA- Formula Quality

Magnesium Oxide provides a high elemental dose of the mineral to support systemic status.

This simple formulation focuses on addressing common gaps in magnesium intake. The high elemental weight contributes to daily requirements essential for foundational wellness.

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Impact
High effect
B+ Goal FitC+ Strength of SupportD+ CoverageA+ Formula Quality

Magnesium oxide is primarily utilized for its osmotic effect, which can help promote bowel regularity. This inorganic mineral form is effective at drawing water into the intestines to support stool softening.

Due to its low systemic absorption, most of the 500mg dose remains in the GI tract, where it exerts its local effect. This product is a cost-efficient option for individuals focusing on intestinal transit.

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Impact
High effect
B+ Goal FitC+ Strength of SupportC+ CoverageB Formula Quality

This magnesium oxide supplement provides a 500mg dose of the mineral to support enzymatic energy production and muscle function. While meaningfully dosed, the oxide form appears poorly aligned for maximum systemic uptake compared to organic chelates.

Supporting metabolic fuel utilization is its primary energy mechanism, particularly for correcting nutritional gaps.

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Impact
High effect
A- Goal FitC Strength of SupportD+ CoverageB+ Formula Quality

Magnesium oxide provides a simple source of this essential mineral to support muscle health and energy metabolism. The high 500mg dose ensures a substantial intake, though the inorganic form is known for lower systemic absorption potential.

Foundational mineral status is critical for preventing deficiency-related performance declines in active individuals. This single-ingredient approach focuses exclusively on fundamental mineral replenishment without extraneous additives.

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Impact
High effect
B+ Goal FitC Strength of SupportD+ CoverageA- Formula Quality

Magnesium is provided as magnesium oxide to support general wellness and mineral status. Magnesium is important for reducing the binding of testosterone to globulins, which may support bioavailable hormone levels.

While the 500 milligram dose is high, the oxide form is known for poor systemic absorption and potential laxative effects. It is a cost-effective option but lacks the bioavailability of more premium chelated forms.

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Impact
Moderate effect
C- Goal FitC Strength of SupportD CoverageA- Formula Quality

Magnesium oxide provides a high elemental dose of 500 mg intended for mineral replenishment and foundational nerve support. This nutrient is essential for maintaining a healthy response to stress and preventing deficiency-related irritability.

However, the oxide form used here has low systemic bioavailability compared to chelated magnesium salts. It is often more effective as a digestive aid than as a primary tool for systemic stress relief.

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Ingredients

IngredientAmount per serving
Magnesium
500 mg
Adults 18–50
Report overview
Magnesium · 500 mg OverallScore43
F Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyD+ Value
This magnesium oxide supplement provides a standard 500mg dose in capsule form at an economical price. It is primarily useful as a laxative due to its poor systemic absorption and high inorganic mineral content.
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