​Jahr’s Clinical Guide, or Pocket-Repertory for the Treatment of Acute and Chronic Diseases by Gottlieb Heinrich Georg Jahr is a seminal work in homeopathic medicine, first published in 1850 and later enriched by Samuel Lilienthal in 1869. This comprehensive guide serves as a practical tool for homeopathic practitioners, offering a systematic approach to prescribing remedies based on a patient’s symptoms. The book categorizes diseases and their corresponding remedies, facilitating quick and accurate treatment decisions.​

Jahr’s methodology emphasizes the importance of individualized treatment, considering the totality of a patient’s symptoms rather than focusing solely on the disease’s name. He introduces a repertory that lists symptoms and the remedies most effective for each, allowing practitioners to match the patient’s presentation with the appropriate homeopathic medicine. This approach underscores the holistic nature of homeopathy, where both physical and emotional symptoms are integral to the healing process.​

The guide is particularly valuable for its practical application in both acute and chronic conditions. It includes detailed descriptions of various diseases, their symptoms, and the remedies that have been most effective in treating them. This structure not only aids in immediate treatment but also serves as a reference for understanding the progression and management of long-term ailments.​

Jahr’s Clinical Guide is a cornerstone in homeopathic literature, offering a structured and comprehensive resource for practitioners. Its emphasis on individualized treatment and practical application makes it an enduring reference for those seeking to understand and apply homeopathic principles in the management of both acute and chronic diseases.​