About L-Threonic Acid
A sugar-acid metabolite of vitamin C, best known as the counter-ion in magnesium L-threonate (Magtein), where the cognitive-benefit evidence belongs to the magnesium-threonate combination, not free threonic acid. There is no independent clinical evidence for threonic acid alone as an active ingredient.
What L-Threonic Acid supports
- Vitamin C metabolite with no independent evidence of benefit on its own
Clinical evidence
Limited clinical evidence. No standalone clinical trials; relevant evidence applies to magnesium L-threonate as a combination, not this acid alone.
NIH Fact Sheet