Magnesium Aspartate
Magnesium aspartate is a magnesium salt of aspartic acid, an amino acid. It is one of several forms of magnesium used in supplements.
What it is studied for
The strongest rated effects first. Bars show the size of the effect, the letter grades the evidence, and each rating lists the studies behind it.
What does magnesium contribute?
Aspartate is one of the forms used to supply magnesium in supplements. 1
Magnesium participates in muscle contraction, nerve signaling and bone mineralization. These normal functions explain why adequate intake matters; they do not establish extra benefits from a particular supplement form. 2
Why people take it
SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.
Questions people ask
Is aspartate absorbed better than oxide?
In the cited volunteer study it was, while absorption was similar to chloride and lactate. That does not demonstrate better symptom relief. 3
Does 350 mg mean a daily supplement dose?
No. The DGE value for adult men refers to total intake, including food. 4
Why can supplements cause diarrhea?
Extra magnesium can cause diarrhea; BfR uses this effect when recommending a maximum supplemental daily amount of 250 mg. 2
Related nutrients
Magnesium Citrate
Magnesium Sulfate
Magnesium Oxide
Magnesium Malate
MagnesiumSources
- Bioavailability of US commercial magnesium preparations Magnesium Research, 2001