Magnesium Aspartate

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Magnesium is essential for over 600 enzymatic processes, not the least of which involves energy production. Aspartic acid is also a critical component of energy production at the cellular level. Scientists have found that binding magnesium to aspartic acid produces an effective magnesium supplement with additional energy support not offered by other forms. Swanson Magnesium Aspartate is a great alternative for those concerned about muscle fatigue and neuromuscular health.

Magnesium has long been popular for its soothing properties. Studies now suggest a link between magnesium and stress. Intakes of 300-500 mg per day may help promote healthy levels of cortisol, the stress hormone, by influencing the activity of the hypothalamic-pituitary axis. Learn more about magnesium for stress on our blog.


Supplement Facts

Serving Size 1 Capsule

Servings Per Container 90

Amount Per Serving % Daily Value
Magnesium (from 685 mg magnesium aspartate) 133 mg 32%

Other Ingredients: Brown rice flour, gelatin, magnesium stearate.

Suggested Use: As a dietary supplement, take one capsule with water three times per day.

Warning: For adults only. Consult your healthcare provider before using this or any product if you are pregnant or nursing, taking medication of have a medical condition.

Storage Instructions: Keep out of reach of children. Do not use if seal is broken. Store in a cool, dry place.




  1. What Does Magnesium Do for the Body?
    Magnesium is an essential mineral involved in hundreds of biochemical processes throughout the body. It supports muscle and nerve function, energy production, protein synthesis, and healthy bone development. Magnesium also helps support cardiovascular health and plays a role in maintaining overall wellness.
  2. What Is the Difference Between Magnesium Glycinate, Citrate, Oxide, and Malate?
    Magnesium supplements are available in several forms, each combining magnesium with a different compound. Magnesium glycinate is often chosen for its gentle nature, magnesium citrate is a popular and widely used form, magnesium oxide provides a concentrated source of elemental magnesium, and magnesium malate combines magnesium with malic acid. Each form delivers magnesium, and the best choice depends on individual preferences, health goals, and product recommendations.
  3. When Is the Best Time to Take Magnesium?
    Magnesium can be taken at any time of day, and the best time often depends on your personal routine and the specific product you choose. Some people prefer taking magnesium with a meal, while others incorporate it into their morning or evening supplement regimen. Consistency is generally more important than timing, so choose a time that works best for your schedule and follow the product's suggested serving size.
  4. What Is Magnesium Aspartate?
    Magnesium aspartate is a form of magnesium created by combining magnesium with aspartic acid, a naturally occurring amino acid. Like other forms of magnesium, it provides this essential mineral to help support muscle and nerve function, energy production, and overall wellness. Magnesium aspartate is commonly included in dietary supplements designed to help individuals meet their daily magnesium needs as part of a balanced diet and healthy lifestyle.
  5. Why Does This Product List Both Magnesium Aspartate and Elemental Magnesium?
    Swanson Magnesium Aspartate provides 685 mg of magnesium aspartate, which yields 133 mg of elemental magnesium—the actual amount of magnesium available to support the body's nutritional needs. Because magnesium is bound to aspartic acid to form magnesium aspartate, the total compound weight is higher than the amount of elemental magnesium it contains. Listing both values helps consumers understand the form of magnesium used and the amount of magnesium provided per serving.
  6. Is Swanson Magnesium Aspartate Suitable for Special Diets?
    Swanson Magnesium Aspartate is made with non-GMO ingredients, making it a convenient choice for individuals seeking a non-GMO magnesium supplement. However, this product is not gluten free and is not suitable for vegetarian or vegan diets. Always review the product label for the most current ingredient, allergen, and dietary information before use.