Proving Medicines

Organon Aphorism §139

When the physician does not make the trial of the medicine on himself, but gives it to another person, the latter must note down distinctly the sensations, sufferings, accidents and changes of health he experiences at the time of their occurrence, mentioning the time after the ingestion of the drug when each symptom arose and, if it lasts long, the period of its duration. The physician looks over the report in the presence of the experimenter immediately after the experiment is concluded, or if the trial lasts several days he does this every day, in order, while everything is still fresh in his memory, to question him about the exact nature of every one of these circumstances, and to write down the more precise details so elicited, or to make such alterations as the experimenter may suggest.

Samuel Hahnemann, Organon of Medicine, 6th edition (Boericke translation, public domain).

Expert explanation & clinical interpretation for this aphorism are coming soon.