Organon & Homoeopathic Philosophy
The Organon: the book that started it all, in plain words
What the Organon of Medicine is, how it is written, and what homoeopathy students read from it in their first year, explained simply.
Vaibhav Kumar Rai · · 3 min read

Every system of medicine has its key books. In homoeopathy, one book comes first. It is called the Organon of Medicine, usually just “the Organon”. It was written by Dr Hahnemann, the founder of homoeopathy.
If you are curious about homoeopathy, this book is a good place to understand where its ideas come from. This piece explains what the Organon is and how homoeopathy students meet it in their first year of training in India. It does not argue for or against anything. It just describes.
A book of numbered paragraphs
The Organon is not written like a story or a normal textbook. It is written as a series of short, numbered paragraphs. Each paragraph is called an aphorism. Students refer to them by number, using the section sign: § 1, § 2, and so on.
This makes the book easy to point to. A teacher can say “look at § 105”, and everyone knows exactly where to go.
The book also exists in more than one edition. The official syllabus refers to both the 5th and 6th editions. Different editions can say slightly different things, so students learn which edition a point comes from.
Students study it from day one
In India, homoeopathy is taught through a degree called BHMS. The syllabus is set by the National Commission for Homoeopathy (NCH). In the very first year, there is a whole subject built around this book. Its full name is “Organon of Medicine with Homoeopathic Philosophy”.
That first-year subject has five chapters. Here they are, in plain words.
- Introduction. The history of medicine, then the history of homoeopathy and the story of Hahnemann’s life. It also covers other key figures, the growth of homoeopathy in India, the U.S.A. and Europe, and the basic ideas of the system.
- Logic. Lessons in two kinds of reasoning, inductive and deductive. Inductive means reasoning from many examples to a general rule. Deductive means reasoning from a general rule to a particular case.
- Aphorisms 1 to 27, and 105 to 145. Two sets of numbered paragraphs, read closely.
- The physician. The purpose, qualities, duties and knowledge of a physician.
- Vital force, dynamization, cure and drug proving. Five big ideas from the book, grouped together.
A few big ideas, simply put
You do not need a degree to get the gist of the main ideas. Here are four, as students first meet them.
Seeing the whole person. The first-year syllabus describes the basic concept of homoeopathy in three words: individualistic, holistic and dynamic. Individualistic means each person is seen as an individual. Holistic means the whole person is considered, not one part. Dynamic means to do with living energy and change.
Life, health and disease. Students compare Hahnemann’s idea of each with the modern idea of each. So the syllabus itself asks students to hold the old and the new side by side.
Vital force. “Vital” means to do with life. Vital force is the idea of a force of life in a living being. It is a central idea in homoeopathic philosophy.
Drug proving. This is how the effects of a medicine are tested and recorded. Aphorisms 105 to 145 deal with it, and first-year Pharmacy studies it too.
These are ideas that students study in a course. They are not claims about your health. This page does not say that homoeopathy can cure, treat or prevent anything.
The book is not a home guide
Some people like to read old medical books and try things out. Please do not use the Organon that way. It is a book of philosophy and method, meant to be studied with teachers over years. Students spend a full course learning to read it properly.
If you have a health concern, the right step is to speak to a qualified, registered practitioner. If you want to see a homoeopath, check their BHMS or MD qualification and their registration. Also keep any doctor you already see in the loop.
Read more on this platform
The Organon topic in Homoeopathy Knowledge is written for any curious reader who wants the ideas without the exam. “What Is Homoeopathy?” on our blog gives a plain overview of the whole system. And if you are a student, the first-year Organon of Medicine room in Learn follows the syllabus chapter by chapter.
Written by Vaibhav Kumar Rai · Published by Homoeopaths.org · 6 October 2026
"The Organon: the book that started it all, in plain words." Homoeopaths.org. Published 6 October 2026, updated 5 October 2026. https://homoeopaths.org/homoeopathy-knowledge/organon/the-organon-the-book-that-started-it-all-in-plain-words
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