Magnesium taurate is a compound formed from magnesium and taurine, an amino acid. Magnesium itself is essential for normal neurological function, and deficiencies have been linked to cognitive impairment and neurodegenerative diseases. Taurine is also present in the brain and has neuroprotective properties. The rationale for using magnesium taurate to support memory and brain function is that it combines the potential benefits of both magnesium and taurine.

There is some preclinical evidence to support neuroprotective effects of magnesium taurate. Animal studies have shown that magnesium taurate may protect against cognitive decline induced by oxidative stress or neurotoxins, possibly due to improved mitochondrial function and reduced neuronal apoptosis. However, direct clinical trials in humans specifically investigating magnesium taurate for memory or brain function are lacking as of 2024. The evidence for magnesium (as a nutrient) broadly supporting cognitive health is stronger, but this cannot be directly extrapolated to magnesium taurate. Similarly, taurine supplementation alone has some animal data suggesting cognitive benefits, but high-quality human studies are limited.

In summary, while there is biological plausibility and some preliminary animal data suggesting a potential role for magnesium taurate in supporting memory and brain function, robust human clinical evidence is currently lacking. Therefore, the evidence rating is 2 out of 5, reflecting promising but limited and primarily preclinical support.