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.
Although, as before remarked, the theory of oxidation of the blood by means of chlorate of potash cannot be scientifically maintained, yet I have certainly seen benefit from that salt in cases of congenital cyanosis: the color and the temperature have both improved under its continued use. Dr. Balthazer Foster has recorded two remarkable cases, in which he obtained similar results ("Clinical Medicine"). Mr. Harding found it (the chlorate) useful "in cases with lividity, and coldness of lips and extremities, and symptoms of obstructed circulation" (Medical Times, ii., 1861), and Dr. Fountain and others have had the same experience.