Lactic acid (DL-Lactic acid) sodium (60% w/w in water) is a hydroxycarboxylic acid receptor 1 (HCAR1) activator and an epigenetic modulator inducing lysine residues lactylation. Lactic acid sodium (60% w/w in water) is a glycolysis end-product, bridging the gap between glycolysis and oxidative phosphorylation. Lactic acid sodium (60% w/w in water) is an oncometabolite and has immune protective role of lactate in anti-tumor immunity[1][2]. Lactic acid sodium (60% w/w in water) also has antimicrobial activity, which can be used as a food preservative[3].This product has a content (w/w) of 60%, and 1 mL of the system contains 798 mg of Lactic acid sodium, i.e., a concentration of 798 mg/mL (i.e., 7.12 M).