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.
Charcoal has been recommended in dysentery, and its antiseptic powers may be serviceable in chronic cases. The putrid smell of the discharges may certainly be relieved by a few doses of 30 to 60 gr., but it returns on discontinuance of the remedy; the effect is a temporary chemical one.
Dr. Farre has reported cases in which it has acted equally well when given in enema (Ranking, ii., 1862).
In Enteric Fever charcoal lessens the distention of stomach and intestines, and when mixed with magnesia sometimes proves still more beneficial.