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.
Aethusa Cynapium, Fool's Parsley, is generally regarded as being highly toxic, but has not been adequately investigated. In small doses it has long enjoyed some reputation in the gastro-intestinal catarrh of bottle-fed babies. It appears to act best when the trouble is incidental to irritation of the nervous system.
While it cannot be regarded as a thoroughly reliable remedy, and without antiseptics in alternation with it usually dismally fails, yet it appears that I I doses of the first decimal dilution in alternation with 1-1000 grain doses of arsenite of copper is a fairly efficient treatment.