Difference between kent repertory and synthesis repertory?
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In homoeopathy, both Kent’s Repertory and Synthesis Repertory are foundational tools used to cross-reference patient symptoms with potential remedies. However, they differ significantly in their scope, origin, and modern clinical application. Key Differences Origins and Historical Basis: Kent's RepeRead more
In homoeopathy, both Kent’s Repertory and Synthesis Repertory are foundational tools used to cross-reference patient symptoms with potential remedies. However, they differ significantly in their scope, origin, and modern clinical application.
Key Differences
Origins and Historical Basis: Kent’s Repertory is a classical text originally published in 1897, which remains the “backbone of practical homoeopathic prescribing” [[5]]. Synthesis Repertory was developed in the 1990s and is directly based on the 6th American edition of Kent’s Repertory, containing all of its original rubrics [[3]].
Scope and Size: The original Kent Repertory contained approximately 700 remedies [[5]]. In contrast, Synthesis is a massive expansion that includes over 2,000 remedies and more than 220,000 additions [[5]].
Data and Updates: Kent’s work is a static historical document based on classical provings. Synthesis aims to correct, update, and improve upon Kent’s original work by integrating contributions from many leading homoeopaths and newer clinical data [[3]]. For instance, the “Mind” chapter in Synthesis has significantly more updated medicines and rubrics compared to Kent’s version [[3]].
Structure and Clinical Features: Kent’s work relies on a strict classical hierarchy emphasizing mental and general symptoms. Synthesis maintains this structure but adds extensive modern clinical rubrics, such as separate sections for “type of pain rubrics” that are absent in Kent’s older format [[4]].
Technology Integration: Synthesis was developed alongside modern repertorization software (such as RADAR), making it a highly dynamic, software-friendly database for contemporary case analysis, whereas Kent is traditionally used in its static book form [[4]].
References
1. Kent JT. Repertory of the homoeopathic materia medica. 6th American ed. Chicago: Medical Century Co.; 1897.
See less2. Schroyens F. Synthesis: Repertorium homeopathicum syntheticum. Edition 9.1. London: Homeopathic Book Publishers; 2010.
3. Homeobook.com. History and development of Synthesis Repertory [Internet]. [cited 2026 Aug 7]. Available from: https://www.homeobook.com/history-and-development-of-synthesis-repertory/
4. RadarOpus. The Repertory Order of Synthesis [Internet]. RadarOpus; 2022 [cited 2026 Aug 7]. Available from: https://www.radaropus.us/wp-content/uploads/2022/06/The-Repertory-Order-of-Synthesis.pdf
5. Thieme Connect. Kent’s Repertory is the backbone of practical homeopathic prescribing [Internet]. Homœopathic Links. Thieme E-Journals; [cited 2026 Aug 7]. Available from: https://www.thieme-connect.com/products/ejournals/html/10.1055/s-2008-1038806