Sodium chloride is the chemical name for common salt. Sodium chlorideis an electrolytethat regulates the amount of water in the body. Apart from this, it also plays a role in muscle's contractions and nerve impulses in the body. Sodium chlorideis a drug used to treat loss of sodium through dehydration, excessive sweating and other causes that can lead to loss of water. It may also be used for other purposes that are not indicated above. Sodium chloride works by enhancing the amount of sodium in the body.