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Extra Strength Magnesium 400 mg

Nature Made
3.9
★ ★ ★ ★ ★
(461 ratings)
Magnesium 400 mg
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Score83

An easy-to-swallow magnesium oxide softgel for heart and bone health support.

How scoring works
Quantity:60 Softgel(s) • (60 servings)
Goals:
Cardiovascular Support
Digestive Health
Stress Relief
Energy
General Health
Heart Health

Score 83

An easy-to-swallow magnesium oxide softgel for heart and bone health support.

How scoring works
$13.04($0.21 per serving)
Vitacost
$ 12.89
iHerb
$ 13.04
Walmart
$ 13.98
iHerb
$ 13.04
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Analysis

These softgels provide 400 mg of magnesium oxide. The softgel format often helps the mineral pass through the stomach more comfortably than compressed tablets, though the absorption rate of oxide remains lower than organic forms.

It is a good fit for people who want a 'one-a-day' softgel to support their heart and bone health. It is a basic, reliable option for those who don't need the high-level calming effects of chelates but want something easy to take.

Pros

  • Softgel is easier to swallow than tablets
  • No chalky aftertaste
  • Supports heart and muscle health
  • Standardized 400 mg dose

Cons

  • Oxide form has lower absorption
  • Laxative effect is common
  • Includes fat/calories (minimal)

Warnings

  • Check for soy or other softgel allergens
  • Take with water and food

Nutrient quality

73 High impact

Reliance on magnesium oxide limits systemic absorption and biological utility. Dosing is appropriate for maintenance but may reach aggressive levels for sensitive digestive systems.

Ingredient transparency

100 Highest impact

Active weights and specific mineral sources are clearly identified for the consumer. Labeling follows standard transparency practices for all included components.

Customer satisfaction

69 High impact

Average rating is notably lower than leading competitors, suggesting some customer dissatisfaction. Feedback indicates mixed outcomes for effectiveness and digestive tolerance.

Value for money

84 Highest impact

Cost per serving is moderate for a basic mineral softgel. Value is acceptable for some, though better forms are available at similar price points.

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Goals

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

This supplement delivers a significant dose of Magnesium to support vascular relaxation and a healthy heart rhythm. The softgel format provides a manageable way to meet daily mineral requirements for cardiovascular function.

The use of Magnesium oxide is a drawback as it has notoriously low bioavailability for systemic use. While the 400 mg dose is robust, much of it may pass through the digestive system without reaching the cardiovascular tissues effectively.

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

Magnesium oxide appears well aligned for maximizing gastrointestinal motility and encouraging regular bowel movements through its osmotic action. This single-ingredient softgel provides a functional approach to addressing occasional constipation and supporting a comfortable digestive environment.

The 400 milligram dose falls within the optimal range for adult support and provides a material level of mineral for gut health. While the oxide form has lower systemic absorption, its local effects in the gut are effective for managing stool regularity.

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

Magnesium is a foundational mineral for regulating the hypothalamic-pituitary-adrenal axis and calming excessive nerve activity. A dose of 400mg appears well-aligned with requirements for daily relaxation and muscle tension relief.

Maintaining adequate magnesium status is essential for supporting a resilient stress response and cognitive focus during demanding periods. However, the use of magnesium oxide significantly reduces the systemic bioavailability of the mineral compared to organic chelates.

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

Magnesium Oxide supports fundamental metabolic cofactors required for ATP production and muscle function. This mineral appears well aligned with addressing physical lethargy and sustaining vitality.

The use of the oxide form may contribute to significantly lower systemic absorption compared to organic chelates. This softgel provides a standard dose but suffers from poor bioavailability choice.

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

This softgel supplement provides 400 mg of Magnesium in its inorganic oxide form to support foundational health. Magnesium is a required cofactor for over 300 enzymes, influencing systemic resilience and metabolic vitality.

While the dosage is therapeutically significant for maintenance, the oxide form is associated with lower systemic absorption. It appears better aligned for basic mineral gap filling than for high-bioavailability therapeutic needs.

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

Magnesium Oxide is provided in a 400 mg softgel for heart and vascular support.

Alignment with heart health is foundational, though the low-bioavailability form limits its clinical effectiveness.

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Ingredients

IngredientAmount per serving
Calories
10 Calorie(s)
Total Fat
0.5 Gram(s)
Magnesium (Magnesium Oxide)
400 mg
Gluten Free Adults 18–50
Report overview
F Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyA- Value
Magnesium oxide is a poorly absorbed form that is often less effective for raising systemic levels of the mineral. While the dose is appropriate and the price is low, more absorbable forms are usually better for long-term health.
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