Sulphite of Soda. NaO, SO2 + 8 HO. Prepared by neutralizing Bisulphite of Soda with Carbonate of Soda, and crystallizing.

Med. Prop. and Action. Similar to those of Sulphurous Acid and the Hyposulphite. It has been prescribed with benefit in cases of chronic yeasty vomiting, connected with Sarcin Ventriculi. In these cases it is supposed to act by evolving Sulphurous Acid. As an external application, a solution of it, acidulated with Acetic Acid, may be used as a lotion in those forms of skin diseases accompanied by vegetable growths.

Bote, gr. xx. - gr. lx.