This section is from the book "A Practitioner's Handbook Of Materia Medica And Therapeutics", by Thos. S. Blair. Also available from Amazon: A Practitioner's handbook of Materia Medica and Therapeutics.
Copper Salts. Copper is a great oxygen carrier and is thought to favorably influence the hemoglobin when given in minute amounts, supplying oxygen and, as Grauvogl said, "neutralizing an overplus of iodosmone in the blood." Thus, it is an antiseptic of great value. Apart from this, copper influences spasmodic affections and nausea and vomiting resulting reflexly from the absorption of ptomaines and organic poisons.
Precipitated metallic copper, in minute doses triturated with sugar, is sometimes used to get the uncombined action of copper, but Cupric acetate acts in a similar manner. The normal acetate, in doses of 1/8 gr., is used in chlorosis, spasmodic diseases, as a stimulant to blood making, and in diseases of the ductless glands. Externally, it is used in gonorrhea and conjunctivitis in 7:4 to 1% solution. There is a tincture made and used quite largely in Germany. It is a convenient way to use it. The dose is 7:4 to 5 I.
Arsenite of copper is a powerful poison, of use in minute doses. All three schools agree upon its indications and its dose. Its indications are diarrhea, with large and frequent discharges and accompanied by watery vomiting, colic, green and offensive stools, It is valuable in cholera infantum in frequent doses of 1-1000 gr. or 3x and increased gradually. In doses of 1-50 to 1-100 gr. or 2X it is a valuable intestinal antiseptic for adults, sometimes of value even in typhoid fever.
Sulphate of copper. Emetic, 2 to 5 gr. Nervine and alterative, 1/4 gr. Externally, to eye, I gr. to K, but as styptic to other tissues up to saturated solution.