Sodium is an essential mineral found in the extracellular fluids: the vascular fluids within the blood vessels, arteries, veins and capillaries.  About 50% of the body's sodium is found in these fluids and the remaining amount is found within the bones.

Sodium works with potassium to equalize the acid-alkali actor in the blood. Sodium and potassium are also involved in muscle contraction and expansion and in nerve stimulation.  Sodium keeps the other minerals soluble, so they do not build up as deposits in the bloodstream.  It acts with chlorine to improve blood and lymph health, helps purge carbon dioxide from the body.  Sodium is necessary for hydrochloric acid production in the stomach.