Sodium 8-(2-hydroxybenzamido)octanoate, which is also called Salcaprozate sodium, or SNAC, it is an oral absorption enhancer with potential as a delivery agent for oral forms of heparin, insulin and semaglutide. Salcaprozate sodium increases lipophilicity induced by non-covalent macromolecular complexation, thereby increasing passive transcellular penetration of intestinal epithelial cells. SNAC is also an absorption enhancer for dicarbonate phosphate compounds, which is used for treating gastrointestinal diseases, especially for gastrointestinal diseases caused by malabsorption of dicarbonate phosphate.