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.
Much power has been claimed for peroxide of hydrogen in the relief of paroxysms of whooping-cough, but I have no experience of it. In a severe case, complicated with cyanosis, in a child with patent foramen ovale, Dr. Mackey used the remedy with apparently good result for the time; the degree of cyanosis was less while the remedy was taken, and the attack of pertussis ran a mild course.
A solution containing ten volumes of oxygen is the one recommended by Dr. Richardson; an ethereal solution is preferred by others. Dose: of the former, 1 to 4 dr. freely diluted; of the ethereal solution, 1/2 to 2 dr.