The book by the famous French homeopath is one of the best textbooks on homeopathy. The main advantage and distinctive feature of this manual is that it is intended primarily for a physician who has previously studied allopathic medicine and has clinical experience. This is the only guide to homeopathy based on a comparative analysis of treatment methods for certain groups of diseases accepted in allopathic and homeopathic medicine, and containing recommendations on how to combine the strengths of these treatment methods in everyday medical practice for the benefit of the patient. Another undoubted advantage of Dr. Vanier's book is its practical orientation. Theoretical issues of homeopathic medicine are covered very briefly, because the author believes that there are excellent monographs on these issues and there is no need to repeat them, but practical issues, on the contrary, are covered in great detail and detail: the clinical stages of the development of the disease in their sequence and the medicines corresponding to these stages, interview and examination of the patient, analysis of symptoms, study and choice of medicine, determination of potency, repeat dose, need for drainage, use of antidotes and complementary drugs, etc.