Magnesium Aspartate vs. Magnesium Amino Acid Chelate
Among 6,062 on-market magnesium products with an identifiable primary form, 8.2% use Magnesium Aspartate (500 products) and 4.6% use Magnesium Amino Acid Chelate (279).
| Magnesium Aspartate | Magnesium Amino Acid Chelate | |
|---|---|---|
| Quality tier | Unrated | Tier 2 |
| Magnesium by weight | 8.4% | — |
| Share of market | 8.2% | 4.6% |
| On-market products | 500 | 279 |
| Median declared dose | 76 elemental mg middle half: 40–167.5 | 83 elemental mg middle half: 25–175 |
| Most common brands | Bluebonnet, Douglas Laboratories, PS ProSupps | NaturesPlus, Douglas Laboratories, MH Michael's Health Naturopathic Programs |
Doses are declared per serving in elemental mg. “By weight” is the share of the ingredient that is the nutrient itself (e.g. elemental magnesium in a magnesium salt).
Why Magnesium Aspartate is unrated
No head-to-head human bioavailability study specific to this salt was found.
Source: none located -- no human head-to-head study found (a rat stable-isotope study including aspartate exists: Coudray C et al. 2005, Magnes Res 18(4):215-23, PMID 16548135; not read in full)
Why Magnesium Amino Acid Chelate is tier 2
Lower serum and salivary Mg response than citrate (but greater 24-h urinary Mg than oxide) in one 60-day RCT; "amino acid chelate" is not a single defined compound.
Source: Walker AF et al. 2003, Magnes Res 16(3):183-191, PMID 14596323
Other magnesium comparisons
- Magnesium Oxide vs. Magnesium Citrate
- Magnesium Oxide vs. Magnesium Glycinate
- Magnesium Oxide vs. Magnesium Aspartate
- Magnesium Oxide vs. Magnesium Amino Acid Chelate
- Magnesium Citrate vs. Magnesium Glycinate
- Magnesium Citrate vs. Magnesium Aspartate
- Magnesium Citrate vs. Magnesium Amino Acid Chelate
- Magnesium Glycinate vs. Magnesium Aspartate
- Magnesium Glycinate vs. Magnesium Amino Acid Chelate