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.
Carbo Ligni, Charcoal. Of value in flatulence with fetid breath, cardialgia from distention, fetid dysentery, and in some cases of passive hemorrhage from mucous membranes. The dose may be very large, but practically all that the remedy will do is accomplished by 5 or 10 gr. doses. It has been used in minute doses in various states, the supposition being that the soluble salts in charcoal had an influence upon the fluids of the body. There is no scientific basis for the employment of dilutions or triturations except that a trituration of equal parts of charcoal and sugar is an eligible way to administer the agent.