Excipient (pharmacologically inactive substance)
What is Sodium?
Sodium (Na) is a chemical from the periodic table of elements with the atomic number of 11. It is a soft, silvery metal. Sodium is often combined with chloride to produce NaCl, or sodium chloride, which is normal table salt. Sodium is a common salt form that is used for many medications to make them more easily dissolvable once ingested, for example, sodium bicarbonate or divalproex sodium.
ChemicalElements.com. Sodium. Accessed April 14, 2012. http://www.chemicalelements.com/elements/na.html