Category: mineral
Aliases: Mg citrate, Trimagnesium dicitrate
Mg²⁺ salt of citric acid. Walker 2003 established citrate as more bioavailable than oxide, sulfate, or chelate-amino-acid in a double-blind crossover — urinary Mg excretion was highest on citrate. Citrate is absorbed largely intact via transcellular paracellular pathways; residual luminal citrate acts as an osmotic laxative, making it the most GI-active of the 'good' organic Mg forms. Common OTC form in the US.
PO: 12h