International Journal of Homoeopathic Sciences

Posology, the study of dosage in medicine, has been one of the most debated aspects of homeopathy. Samuel Hahnemann, the founder of homeopathy, devoted over four decades to refining his approach to dosage. His journey began with large doses common in conventional medicine and culminated in the development of 50 millesimal potency, a revolutionary concept in homeopathic practice. This study examines the chronological evolution of Hahnemann’s posology, highlighting key milestones such as the introduction of infinitesimal doses, the practice of olfaction, and his final modifications in the sixth edition of the Organon of Medicine. By understanding this progression, practitioners can better appreciate the foundational principles of dose selection and their critical role in achieving therapeutic success.