<p>Sodium chloride is the principle salt involved in maintaining the osmotic tension of blood and tissues, changes in osmotic tension influence the movement of fluids and diffusion of salts in cellular tissue. Sodium Chloride tablet provides a source of sodium where a deficiency exists. Sodium chloride is readily absorbed from the gastro-intestinal tract. It is present in all body fluids but specially in the extracellular fluid. The amount of sodium lost (as sweat) is normally small. Osmotic balance is maintained by excretion of surplus amounts in the urine.</p>