There have been six editions of the Organon of Medicine. The first edition was published in 1810, followed by a second edition in 1819, a third edition in 1824, a fourth edition in 1829, a fifth edition in 1833, and a sixth edition in 1842.
The sixth edition is the final and most complete version of the Organon and is considered the standard edition.
Each edition of the Organon includes revisions and additions to Hahnemann’s original text, reflecting his evolving ideas about the nature of disease and the principles of homeopathic treatment.
The sixth edition includes significant revisions and expansions to the earlier editions and is considered the definitive version of the Organon. It is the edition that is most widely studied and used in modern homeopathic practice.