Read Intestinal Absorption

Salt enables faster glucose uptake in intestine. Intestinal glucose uptake is enhanced by sodium because the transporter SGLT uses the $\mathrm{N}{\mathrm{a}}^{+}$ electrochemical gradient to carry glucose into cells. $\mathrm{N}{\mathrm{a}}^{+}$ and glucose move in the same direction, so the carrier is a symporter. The $\mathrm{N}{\mathrm{a}}^{+}$ gradient is maintained indirectly by the $\mathrm{N}{\mathrm{a}}^{+}$/${\mathrm{K}}^{+}$ ATPase.