Proving Medicines

Organon Aphorism §124

For these experiments every medicinal substance must be employed quite alone and perfectly pure, without the admixture of any foreign substance, and without taking anything else of a medicinal nature the same day, nor yet on the subsequent days, nor during all the time we wish to observe the effects of the medicine.

Samuel Hahnemann, Organon of Medicine, 6th edition, translated by William Boericke (1922, public domain). Checked word for word against the 1922 printing in October 2026.

Study notes for this aphorism are not published yet. They appear here once a homeopath has reviewed them.