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Magnesium 500 mg

Nature's Bounty
4.8
(8761 ratings)
Magnesium 500 mg
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Score86

An affordable, high-dose magnesium oxide tablet best suited for digestive support and basic mineral intake.

How scoring works
Quantity:100 Tablet(s)(100 servings)
Goals:
General Health
Digestive Health
Bone Health
Cardiovascular Support
Heart Health

Score 86

An affordable, high-dose magnesium oxide tablet best suited for digestive support and basic mineral intake.

How scoring works
$6.92($0.06 per serving)
Vitacost
$ 8.65
iHerb
$ 7.88
Walmart
$ 6.92
Vitacost
$ 8.65
Amazon
$ 6.92
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Analysis

This supplement uses magnesium oxide, which provides a large amount of the mineral in a very small tablet. While this form is cost-effective, much of it may pass through the system without being absorbed into the bloodstream.

It is most useful for people who want an affordable way to support their digestive regularity or basic structural health. It is a straightforward option for those who don't have sensitive stomachs and need a simple daily mineral.

Pros

  • Very low cost per serving
  • Small, easy-to-swallow tablets
  • Supports bowel regularity
  • High elemental magnesium content

Cons

  • Low systemic bioavailability
  • May cause stomach upset in some people
  • Lacks the calm support of chelates

Warnings

  • May have a mild laxative effect
  • Take with a full glass of water

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

94 Highest impact

Strong ratings over a large number of reviews suggest reliable performance for general mineral needs. Feedback indicates that the product is well-received for its cost-effectiveness and simple efficacy.

Value for money

89 Highest impact

Extremely low cost per serving makes this one of the most accessible mineral supplements available. Affordability provides significant value for budget-conscious consumers seeking basic mineral support.

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Goals

Impact
Highest effect
A+ Goal FitB- Strength of SupportC CoverageA Formula Quality

Magnesium is a critical mineral required for hundreds of metabolic processes, supporting cardiovascular health and muscle function. This high-dose option provides a significant elemental amount for daily maintenance.

Magnesium Oxide offers a high yield of elemental mineral but may have lower systemic absorption than organic chelates. Frequent use supports skeletal integrity and energy metabolism across multiple body systems.

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Impact
Highest effect
A- Goal FitB+ Strength of SupportC- CoverageA+ Formula Quality

Magnesium oxide is provided at 500mg to support bowel regularity and motility through osmotic action. This inorganic form is a standard intervention for promoting stool softening and relieving occasional constipation.

While effective for stool regulation, the oxide form has limited systemic bioavailability compared to chelated alternatives. It is most suitable for those seeking localized digestive support for regularity.

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

Magnesium oxide provides a significant elemental dose to support foundational mineral density and enzymatic cofactors. This inorganic salt is a standard structural component of the skeletal system, contributing to total mineral mass.

Providing 500mg per serving assists in meeting daily structural requirements for bone maintenance. The formula is purely focused on mineral repletion without additional signaling cofactors or complex botanical blends.

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

High-dose magnesium supports healthy heart rhythm and promotes blood vessel relaxation. This supplement provides a large elemental dose for mineral repletion, which is essential for general cardiovascular maintenance.

Providing 500mg of magnesium meets an ideal therapeutic target for heart and circulatory health. The use of magnesium oxide, however, results in lower systemic absorption compared to more bioavailable organic chelates.

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

Magnesium oxide is provided at a 500mg elemental dose, which may contribute to basic mineral status for heart rhythm. However, this inorganic form has significantly lower bioavailability compared to organic chelates.

While the elemental weight is high, the systemic uptake for cardiovascular tissues may be limited. The formula is lean but lacks the superior absorption profiles of citrate or malate forms.

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Impact
Moderate effect
B- Goal FitC- Strength of SupportD CoverageB Formula Quality

Foundational mineral support is provided through high-dose Magnesium to support natural endocrine balance. This building block appears well aligned with metabolic pathways that may contribute to healthy hormone synthesis.

While the elemental weight is substantial, the use of the oxide form may limit the efficiency of systemic uptake. The single-ingredient approach ensures focus on mineral repletion for broader metabolic health.

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Ingredients

IngredientAmount per serving
Magnesium (Magnesium Oxide)
500 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
F Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyD+ Value
This magnesium oxide supplement provides a large elemental dose at an extremely affordable price point. While transparently labeled, its low absorption rate makes it less effective for systemic repletion than organic forms.
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