Manganum Sulfuricum
T. F. Allen - Encyclopaedia of Pure Materia Medica · Timothy Field Allen · 212 chars
General
Authority. Alexander Ure, Med. Gaz. (Pharm. Journ., vol. iv, 1844-5, p. 285), effects of a drachm dissolved in half a pint of water, and drank before breakfast.
One or more liquid stools (after one hour or so).