More than a century after its first publication, Kent's Repertory remains the single most influential reference in homeopathic practice. Almost every modern repertory—Murphy, Complete Repertory, Synthesis—traces its lineage back to this one book. If you're a student opening a repertory for the first time, there's a strong chance it will be Kent's. And if you're a seasoned practitioner, Kent's structural logic is likely embedded in the way you think about cases, whether you realise it or not.
Yet for all its importance, Kent's Repertory can feel intimidating at first. Its sheer size—approximately 68,000 rubrics across 37 chapters—combined with 19th-century language and a layered hierarchy of symptoms can overwhelm newcomers. This guide breaks it all down: who Kent was, how the repertory is structured, how to navigate it efficiently, and where you can access it online for free in 2026. If you're evaluating homeopathic repertory software more broadly, the same structural logic applies — Kent is the spine of nearly every digital platform.
Read Kent's Repertory free, right now. All 37 chapters and roughly 68,000 rubrics are searchable on Similia — with semantic search, so you can describe a symptom in modern language instead of guessing Kent's wording. No download, no credit card, free on every plan. Open Kent's Repertory online →
Who Was James Tyler Kent?
James Tyler Kent (1849–1916) was an American physician who became one of the most influential figures in classical homeopathy. Originally trained in conventional medicine, Kent turned to homeopathy after witnessing its effects on his own wife's chronic illness. He went on to become a professor of materia medica and a prolific teacher, and his lectures on homeopathic philosophy remain widely studied today.
Kent's greatest practical contribution was his Repertory of the Homeopathic Materia Medica, first published in 1897. Rather than inventing an entirely new system, Kent built on the earlier work of Boenninghausen and Lippe, expanding and reorganising the repertory into a format that proved so logical and comprehensive it became the standard for the profession. His approach—working from generals to particulars, from mental symptoms to physical ones—reflected his deep commitment to the totality of symptoms as the basis for prescribing.
Kent passed away in 1916, but his repertory has been reprinted, revised, and digitised countless times. Virtually every modern repertory owes its fundamental structure to Kent's original framework.
The Sources of Kent's Repertory
Kent did not build his repertory from scratch. Its foundation was the repertory of Adolph Lippe together with the analytical framework of Boenninghausen — particularly Boenninghausen's emphasis on generals and modalities applied to the whole person. Kent expanded and reorganised this inherited material, adding rubrics drawn from provings and his own clinical verification, and the work was enlarged further in later, posthumous editions. This lineage is why Kent's chapter order and grading system feel familiar across almost every repertory that followed — Murphy, Complete Repertory, and Synthesis all inherit it.
The Structure of Kent's Repertory
Understanding the structure is the key to using Kent effectively. The repertory is organised into 37 chapters, each covering a distinct anatomical region or functional system. These chapters follow a consistent order from top to bottom, from internal to external, and from mind to body.
The 37 Chapters of Kent's Repertory (Full List)
Here is the complete Kent's Repertory chapter list, in the original order:
- Mind — Mental and emotional symptoms
- Vertigo — Dizziness and related sensations
- Head — Headaches, scalp symptoms, congestion
- Eye — Eye complaints, inflammation, vision disturbances
- Vision — Visual disturbances specifically
- Ear — Ear pain, discharge, hearing issues
- Hearing — Hearing-specific symptoms
- Nose — Nasal symptoms, coryza, discharge
- Face — Facial symptoms, expressions, pain
- Mouth — Oral symptoms, taste, tongue
- Teeth — Dental pain, grinding, sensitivity
- Throat — Sore throat, swallowing, constriction
- External Throat — Cervical glands, thyroid region
- Stomach — Appetite, thirst, nausea, vomiting
- Abdomen — Abdominal pain, bloating, rumbling
- Rectum — Rectal symptoms, diarrhoea, constipation
- Stool — Characteristics of stool
- Bladder — Urinary symptoms
- Kidneys — Kidney-specific complaints
- Prostate — Prostate symptoms
- Urethra — Urethral symptoms
- Urine — Characteristics of urine
- Genitalia Male — Male reproductive symptoms
- Genitalia Female — Female reproductive symptoms, menses
- Larynx and Trachea — Voice, hoarseness, laryngeal symptoms
- Respiration — Breathing patterns, dyspnoea
- Cough — Types and modalities of cough
- Expectoration — Sputum characteristics
- Chest — Chest pain, palpitations, breast symptoms
- Back — Spinal pain, stiffness, lumbar symptoms
- Extremities — Limb symptoms, joint pain, numbness
- Sleep — Sleeplessness, sleep position, restlessness, and dreams
- Chill — Chilliness, shivering patterns
- Fever — Fever patterns and characteristics
- Perspiration — Sweating patterns and characteristics
- Skin — Eruptions, itching, discolouration
- Generalities — Constitutional symptoms, overall modalities
Why you sometimes see a different number: Kent's standard structure has 37 chapters, but some digital editions split or merge sections — for example, listing Dreams as a chapter separate from Sleep (which gives 38), or grouping the five urinary chapters (Bladder, Kidneys, Prostate, Urethra, Urine) under a single "Urinary Organs" heading (which gives fewer). The underlying rubrics are identical; only the editorial grouping changes.
By rubric count, the Extremities chapter is the largest in Kent's Repertory, reflecting the density of regional and modality rubrics for the limbs. The Mind chapter is placed first and carries the greatest weight in classical case analysis.
The final chapter, Generalities, is arguably the most important. It contains symptoms that apply to the whole person rather than any specific body part—things like aggravation from cold, desire for open air, or weakness at particular times of day. Many experienced homeopaths begin their repertorisation in Generalities and Mind before turning to the particular chapters.
How Rubrics Are Organised Within Each Chapter
Within every chapter, rubrics follow a hierarchical structure. A main rubric sits at the top level, with progressively more specific sub-rubrics indented beneath it:
- Main rubric: Head; pain
- Sub-rubric: Head; pain; morning
- Sub-sub-rubric: Head; pain; morning; waking, on
- Sub-rubric: Head; pain; morning
This nested structure lets you move from a broad symptom to an increasingly precise description. The deeper you go, the more specific the symptom—and typically, the fewer remedies are listed.
The Grading System
Kent used a three-tier grading system to indicate how strongly a remedy is associated with a particular symptom:
- Grade 3 (Bold): The remedy has been confirmed through extensive clinical experience and provings. These are the most reliable associations.
- Grade 2 (Italic): The remedy has good support but less extensive confirmation than Grade 3.
- Grade 1 (Plain/Roman): The remedy has been noted in association with the symptom but with less certainty.
When repertorising, Grade 3 remedies in a rubric carry the most weight. However, experienced practitioners know that a Grade 1 remedy appearing across multiple rubrics can be just as significant as a single Grade 3 appearance—it's the totality that matters.
How to Navigate Kent's Repertory Effectively
Start With the Right Chapter
Before searching for a rubric, identify which chapter it belongs to. A burning sensation in the stomach belongs in the Stomach chapter, not Generalities. Pain in the right knee goes to Extremities. Mental restlessness goes to Mind. This sounds obvious, but beginners often waste time looking in the wrong section.
A common source of confusion: symptoms related to laterality (left-sided, right-sided) are typically found as sub-rubrics within the relevant chapter, not as standalone entries.
Understand Cross-References
Kent's Repertory uses cross-references to guide you from one rubric to a related one. If a symptom could logically appear in more than one chapter, Kent sometimes indicates where else to look. Pay attention to these—they often lead to rubrics you would otherwise miss.
Work With Modalities
Modalities—factors that make symptoms better or worse—are some of the most valuable rubrics in the repertory. They're usually listed as sub-rubrics under the main symptom:
- Head; pain; motion, from (worse from movement)
- Head; pain; pressure, ameliorates (better from pressure)
Modalities help narrow your remedy list significantly and often point to highly characteristic remedies.
Look for What You Don't Expect
Some rubrics are tucked into unexpected locations. For instance, symptoms related to food desires and aversions are found in the Stomach chapter (under "desires" and "aversion"), not in Generalities. Weather-related aggravations appear both in Generalities and in specific chapters. When in doubt, try multiple locations—or use a digital search tool that eliminates the guesswork entirely.
Use the Mind Chapter Wisely
The Mind chapter is often the most important for finding the simillimum, but it's also the trickiest to use correctly. Mental symptoms must be clearly confirmed—genuine fears, anxieties, and emotional states—rather than assumptions. A patient who says "I sometimes feel a bit anxious" is not the same as one whose anxiety is a defining feature of their case.
Kent's Repertory Compared to Other Major Repertories
Kent's Repertory set the template, but subsequent repertories have expanded, reorganised, and modernised the material in various ways. Understanding these differences helps you choose the right tool for your needs. For a full side-by-side comparison, see our guide to Murphy's vs Kent's vs Complete Repertory.
Kent vs Murphy's Medical Repertory
Murphy's Repertory, compiled by Dr Robin Murphy ND over twenty-plus years, includes all of Kent's original rubrics plus thousands of additions from Allen, Hering, Boericke, Knerr, and Phatak. Murphy reorganised rubrics for clinical clarity—grouping related symptoms under single headings—and updated the language to be more accessible. Where Kent might use "coryza," Murphy also includes modern synonyms. Murphy's is widely regarded as the most practical repertory for daily clinical use.
Kent vs Complete Repertory
Roger van Zandvoort's Complete Repertory, first published as a database in 1996, is one of the largest repertories available. It's built on Kent's foundation but has been greatly expanded and—crucially—documents the exact source of every addition. This source tracking makes it invaluable for researchers who want to verify the provenance of a rubric.
Kent vs Boenninghausen's Therapeutic Pocketbook
Boenninghausen's approach differs philosophically from Kent's. Where Kent favours specific, detailed rubrics, Boenninghausen uses broader, more generalised categories combined with a system of concomitants and modalities. The two methods complement each other well, and many practitioners use both.
Kent vs Synthesis
Synthesis, used by RadarOpus, is essentially an expanded and updated Kent. It retains Kent's chapter structure and hierarchy while adding rubrics from numerous modern sources. It's the most commonly used repertory in RadarOpus software.
| Feature | Kent | Murphy | Complete Repertory | Synthesis |
|---|---|---|---|---|
| Rubrics | ~68,000 | ~100,000+ | Largest available | ~250,000+ |
| Language | Classical (19th century) | Modern clinical | Mixed | Mixed |
| Organisation | Generals to particulars | Clinical groupings | Kent-based, expanded | Kent-based, expanded |
| Source tracking | No | Partial | Yes | Partial |
| Best for | Students, classical prescribers | Clinical practitioners | Researchers | RadarOpus users |
| Digital availability | Widely available free | Premium (Similia, others) | Premium (Similia, others) | RadarOpus exclusive |
Where to Access Kent's Repertory Online in 2026
One of the advantages of Kent's Repertory being over a century old is that it's in the public domain. Several platforms offer free access:
Free Options
Similia (Free Tier) — Kent's Repertory is searchable free on Similia as part of its free-forever plan, alongside six other classical repertories (Boericke, Boenninghausen, Hering, Boger, Ward's Sensations, Roberts' Sensations). What sets Similia apart from other free options is AI semantic search: you can type symptoms in modern language and the platform maps your search to the correct classical rubrics. The free tier also includes 13 classic materia medica books and basic case management capped at 3 new cases and 3 analyses per month, with cloud syncing across devices — all without a credit card. The free homeopathic software page details exactly what the no-cost plan covers.
OOREP (Open Online Repertory) — OOREP is a free, open-source online repertory that includes Kent, Boger, and Hering. It's browser-based with no installation required. OOREP focuses on essential functionality—search, rubric display, and basic repertorisation—without AI features or case management.
Homeoint/Medi-T — Kent's Repertory is available as browsable HTML on the Medi-T website. This is a straightforward, text-based format—no search beyond your browser's Ctrl+F, no analysis tools—but it's free and has been online for decades.
Paid Software With Kent Included
RadarOpus — Includes Kent as part of its broader Synthesis repertory. Desktop-based software licensed per machine; a 30-day trial is available.
Hompath Zomeo — Includes Kent among its 42+ repertories, in desktop and mobile versions.
Complete Dynamics — Includes Kent within its repertory system; access is subscription-based.
Why Digital Kent Beats the Printed Book
The printed book has served homeopathy well for over a century, but a digital version offers practical advantages that are hard to ignore:
- Speed: Instant full-text search versus manual page-flipping
- Semantic search: Find rubrics using modern language, not just Kent's terminology
- Cross-referencing: Compare the same symptom across Kent and other repertories simultaneously
- Portability: Access Kent on your laptop, tablet, or phone—no heavy book to carry
- Integration: Move seamlessly from rubric to materia medica to case notes in one platform
For a deeper look at how online repertories are transforming practice, see our dedicated guide.
Tips for Students Studying Kent's Repertory
Learn the Chapter Order
Memorising the 37 chapters in sequence gives you an intuitive map of the repertory. When a patient describes a symptom, you should instinctively know which chapter to turn to. Quiz yourself: where do you find food cravings? (Stomach.) Dreams of falling? (Sleep.) Restless legs at night? (Extremities, then Sleep.)
Read Generalities and Mind First
These two chapters contain the symptoms most valuable for constitutional prescribing. Spend extra time studying the major rubrics in Generalities (aggravations, ameliorations, food desires) and Mind (fears, anxieties, irritability, concentration). Many polycrest remedies can be identified from these chapters alone.
Practice With Real Cases
The best way to learn the repertory is to use it. Take published cases—many are available in homeopathic journals and textbooks—and practise finding the relevant rubrics in Kent. This builds familiarity with the structure far faster than passive reading.
Study the Grading System in Context
Don't just memorise which remedies are bold, italic, or plain. Understand why: a Grade 3 remedy in a rubric means it has strong clinical and proving confirmation. But don't dismiss Grade 1 remedies—if the same Grade 1 remedy keeps appearing across your selected rubrics, it may be the simillimum.
Use Digital Tools to Accelerate Learning
Modern platforms let you search semantically, compare repertories side by side, and jump instantly from rubrics to materia medica. Using a digital repertory tool alongside your printed Kent helps you learn the classical terminology while benefiting from modern search capabilities.
Compare Kent With Other Repertories
Once you're comfortable with Kent's structure, explore how the same symptoms appear in Murphy or Complete Repertory. This broadens your understanding and shows you where Kent has gaps or where other authors offer additional remedies and perspectives.
