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Magnesium 500 mg

Nature's Bounty
4.7
(109407 ratings)
Magnesium 500 mg
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Score86

A high-quantity, budget-friendly magnesium oxide supplement primarily used for digestive support.

How scoring works
Quantity:200 Tablet(s)(200 servings)
Goals:
General Health
Digestive Health
Fitness
Sleep Support
Stress Relief
Energy

Score 86

A high-quantity, budget-friendly magnesium oxide supplement primarily used for digestive support.

How scoring works
$8.98($0.04 per serving)
Walmart
$ 7.47
iHerb
$ 12.98
Vitacost
$ 12.98
Amazon
$ 7.47
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Analysis

This supplement provides 500 mg of magnesium as an oxide in each tablet. This inorganic form is primarily used for its localized effect in the gut, making it a common choice for people looking to support regularity.

While it is less efficient at raising systemic magnesium levels than chelates, the high elemental weight helps fill general nutritional gaps. It is a solid, no-frills choice for someone who needs a large supply of an affordable mineral.

Pros

  • Excellent value with 200 tablets
  • High elemental magnesium yield
  • Very affordable price point
  • Simple, one-tablet daily dose

Cons

  • Lower systemic bioavailability
  • Can cause mild digestive cramping
  • Not the best for high-level stress support

Warnings

  • Start with a single tablet to assess tolerance
  • Do not take on an empty stomach

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

Consistently strong ratings across a massive volume of reviews indicate reliable performance for general mineral needs. Feedback indicate 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 FitB Strength of SupportC CoverageA+ Formula Quality

Magnesium oxide is included to support muscle health and structural integrity in active users. This mineral is essential for the electrical signaling required for muscle contraction and training performance.

The high-quantity format provides a standard daily supply of this critical electrolyte. Focused mineral support appears well aligned with the fitness goal of maintaining bone and muscle health.

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Impact
High effect
A- Goal FitB Strength of SupportD+ CoverageA+ Formula Quality

Magnesium oxide provides physical and mineral support intended to promote a state of relaxation. While magnesium is essential for sleep, this specific form is known for its lower systemic absorption compared to organic chelates.

Magnesium appears well aligned with the reduction of nighttime restlessness. This high-dose mineral tablet supports the body's natural systems for physical recovery and rest.

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

This single-mineral supplement provides a high elemental dose of Magnesium from an oxide source to support foundational health. It may contribute to general nervous system maintenance, although systemic absorption is often limited by the chemical form.

The 500 mg dosage is substantial for a single unit. However, the use of inorganic Magnesium Oxide increases the risk of gastrointestinal side effects compared to chelated organic forms.

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

Magnesium is a vital mineral required for the synthesis of ATP and the regulation of metabolic energy. Utilizing magnesium oxide provides a high elemental weight in a single tablet format.

While the elemental amount is high, the oxide form is known for poor systemic bioavailability compared to chelated alternatives. This supplement offers foundational mineral support but may be limited by its absorption efficiency.

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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 & BioavailabilityC+ Dose, Safety & Label TransparencyD+ Value
This is a standard, mass-market magnesium supplement utilizing magnesium oxide, which is known for its lower systemic absorption. While it is extremely affordable, it may cause gastrointestinal discomfort due to the high elemental dose and poor bioavailability.
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