This section is from the book "Materia Medica And Therapeutics Inorganic Substances", by Charles D. F. Phillips. Also available from Amazon: Materia medica and therapeutics.
Several writers, chiefly American, have strongly recommended the internal and external use of the sulphites in the later stages of syphilis (Ranking, ii., 1868). I have had no occasion to prescribe them, but have found the acid locally applied most useful in throat and other ulcerations. Dr. Purdon has recorded an illustrative case (British Medical Journal, i., 1868).