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Vermeulen Concordant Reference

Concordant Reference builds on the foundation of the classic materia medica – bringing it into the modern world of contemporary homeopaths, addressing their needs for accurate information!


Vermeulen Concordant Reference



Vermeulen’s Concordant Reference in RadarOpus

Frans Vermeulen’s popular materia medica, Concordant Reference, was first published 17 years ago and was an instant success, understandably so. It was enlarged three years later. The version of Concordant Reference in RadarOpus has been expanded, updated, revised and improved, containing more information and more remedies – reflecting the changes that have occurred in homeopathic techniques and scientific knowledge in recent years. The identity of remedy sources has been checked and verified, as well as corrected when needed. 


Essential insights into Concordant Reference

  • 2200 pages
  • 1209 remedies including – Plants, Animals, Minerals, Chemical compounds, Drugs, Fungi, Protista, Imponderables, Nosodes, Sarcodes, Rocks and Waters
  • 922 remedies have full, expanded sections (previous version – 847 remedies in 1600 pages)
  • 287 small and largely unknown remedies from Boericke.
    • These 287 remedies have been buried in Boericke and, by and large, contain very small amounts of information. Virtually hidden, they were rarely, if ever, used and therefore homeopaths had no chance to develop more information and clinical experience. The beginning of learning how to use a remedy is to know what it is and where it belongs. Giving these hidden remedies an accessible place, they can become more known and their usefulness expanded. As current experience in homeopathy demonstrates, often a small or previously unknown remedy can yield brilliant results.
  • Remedy names have been upgraded to current scientific nomenclature standards.
  • Each remedy has its Latin and common name.
  • There are formulas for mineral and organic compounds.
  • A family division is given for plants, animals, fungi, bacteria and viruses.

The term ‘Classic Materia Medica’ refers to the work done from 1790 – 1931, starting with Hahnemann and ending with Boericke and Boger

After that, there was a gaping silence for about 50 years during which there was almost no new information. The homeopathy renaissance we are still experiencing began around 1980. Under all new developments is the foundation from the classic authors and their important original work.

Concordant Reference is a one volume compilation of the classic texts of –

  1. T.F. Allen – Handbook of Materia Medica and Homeopathic Therapeutics and [partially] Encyclopedia of Pure Materia Medica -10 volumes (1874 – 79)
  2. T.F. Allen – A Primer of Materia Medica
  3. Boericke – Pocket Manual of Homeopathic Materia Medica (1927)
  4. Boger – Synoptic Key of the Materia Medica (1931)
  5. Clarke – Dictionary of Homeopathic Materia Medica – 3 volumes (1900)
  6. Cowperthwaite – Textbook of Materia Medica and Therapeutics (1891)
  7. Hering – Guiding Symptoms – 10 volumes (1877 – 89)
  8. Kent – Repertory (1877)
  9. A. Lippe  – Textbook of Materia Medica (1865)
  10. Pulford – Homeopathic Materia Medica of Graphic Drug Pictures (approx. 1930)

Symptoms from T.F. Allen’s Handbook and his 10-volume Encyclopedia have been added to Concordant Reference!

The Sensation, Mind and Dream sections have been most enlarged, reflecting the recent developments in case taking, case analysis and prescribing that have shown to be so effective for today’s homeopath.

The remedies most benefiting from the additional information are the medium sized and small remedies.  Polychrests are so well known, there was hardly anything new to add, even after scouring Allen’s Encyclopedia for additional symptoms. Until now, remedies that fell into the category of medium and small were relegated to reduced status because they were considered to be useful only in a narrow sense as being indicated for specific organs or for limited local symptoms.

  • Sections include – Generals, Mind, Dreams, Body areas, Modalities, Relations, Causations.
    • From the standard repertory body sections, the sections of ‘Food and drink’, ‘Heart’, ‘Limbs general’, ‘Limbs upper’, ‘Limbs lower’ are split out for easier reference.
    • There are three possible divisions in each section – Sensation, Pain, Objective.
    • Symptoms come from three sources – proving, intoxication and clinical.
    • Whereas formerly the emphasis was on symptoms from clinical observations, now by the addition of more proving symptoms, a better balance has been achieved. This has been made possible by the addition of Allen’s Encyclopedia which concerns solely provings and intoxications.

Previously, there were instances in which two remedies were lumped together because they were thought to be the same. For the first time in any materia medica, the Concordant Reference differentiates the two, assigning the correct symptoms to each one, allowing for more accurate prescribing. Examples of such pairs include –

  • Rhus tox and Rhus radicans
  • Bryonia alba and Bryonic dioica
  • Aloe socotrina and Aloe ferox

Book extract
“The first edition of the Concordant Reference contains the classic homeopathic materia medica, complete in one volume. What is known as the classic materia medica encompasses the investigation, collection and research of homeopathic remedies from the birth of the homeopathic materia medica with Hahnemann’s proving of China in 1790 until the near cessation of work in 1930, after years of decline. During these fruitful 140 years, many well-known authors contributed important and fundamental work, establishing the foundation of the materia medica that is still pertinent today. Hundreds of provings were conducted and thousands of symptoms were gathered and edited from case reports published in contemporary medical journals. This materia medica activity had its peak between 1810 and 1880, with Hahnemann and Stapf in Germany and Hering and Lippe in the USA as the main contributors to its construction and expansion.”

Click here to read more and see gallery images of Vermeulen’s Concordant Reference in RadarOpus Homeopathic software!