Keynotes And Characteristics With Comparisons of some of the Leading Remedies of the Materia Medica

by H. C. Allen • 1836–1909

Keynotes and Characteristics — the pocket-sized classic for learning remedy differentiation.

Published 1899American Kentian185 remediesFree online
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About H. C. Allen

Henry C. Allen, MD (1836–1909) was a Canadian-born American homeopath and a colleague of J.T. Kent. He founded Hering Medical College in Chicago and edited The Medical Advance, the leading Kentian journal of his time.

Allen specialized in materia medica teaching. Where Kent gave psychological portraits, Allen trained students to recognize the three or four keynote features that tell one remedy from another at the bedside.

About Keynotes And Characteristics With Comparisons of some of the Leading Remedies of the Materia Medica

Keynotes and Characteristics With Comparisons of some of the Leading Remedies of the Materia Medica is the standard pocket reference for keynote-based differentiation. First published in 1899, it has been reprinted continuously for over 125 years.

Each remedy is reduced to its essential fingerprint — the three or four strange, rare, peculiar, or verified-constant symptoms that reliably point to it. Comparisons to related remedies are woven into every entry.

It is the book students carry in their coat pocket during training. Short enough to re-read cover to cover; sharp enough that experienced prescribers still reach for it.

Best for

  • Learning keynotes and characteristic symptoms
  • Quick differentiation between similar remedies
  • Students and clinicians in the Kentian school
  • Pocket reference during acute prescribing

Frequently asked questions

What is H.C. Allen's Keynotes?

Keynotes and Characteristics With Comparisons of some of the Leading Remedies of the Materia Medica is a compact homeopathic reference by H.C. Allen, first published in 1899, focused on the key distinguishing symptoms of each remedy and their differential comparisons.

Who was H.C. Allen?

Henry C. Allen, MD (1836–1909) was a Canadian-American homeopath, founder of Hering Medical College in Chicago, and a leading teacher in the Kentian tradition.

Is H.C. Allen the same as T.F. Allen?

No. Henry C. Allen (Keynotes) and Timothy F. Allen (Encyclopedia of Pure Materia Medica) were contemporaries but different people. Both were major American homeopaths; their books serve very different purposes.

What is a keynote in homeopathy?

A keynote is a symptom so characteristic of a particular remedy that its presence strongly suggests the remedy. Allen's book is built around these keynotes as a practical prescribing shortcut.

Contents, in printed order

  1. 1Abrotanum
  2. 2Aceticum acidum
  3. 3Aconitum napellus
  4. 4Aesculus hippocastanum
  5. 5Aethusa cynapium
  6. 6Agaricus muscarius
  7. 7Agnus castus
  8. 8Allium cepa
  9. 9Aloe socotrina
  10. 10Alumina
  11. 11Ammonium carbonicum
  12. 12Ammonium muriaticum
  13. 13Ambra grisea
  14. 14Amylenum nitrosum
  15. 15Anacardium orientale
  16. 16Antimonium crudum
  17. 17Antimonium tartaricum
  18. 18Anthracinum
  19. 19Apis mellifica
  20. 20Apocynum cannabinum
  21. 21Argentum metallicum
  22. 22Argentum nitricum
  23. 23Arnica montana
  24. 24Arsenicum album
  25. 25Arum triphyllum
  26. 26Asarum europaeum
  27. 27Asterias rubens
  28. 28Aurum metallicum
  29. 29Baptisia tinctoria
  30. 30Baryta carbonica
  31. 31Belladonna
  32. 32Benzoicum acidum
  33. 33Berberis vulgaris
  34. 34Bismuthum
  35. 35Borax veneta
  36. 36Bovista lycoperdon
  37. 37Bromium
  38. 38Bryonia alba
  39. 39Cactus grandiflorus
  40. 40Caladium seguinum
  41. 41Calcarea arsenicosa
  42. 42Calcarea phosphorica
  43. 43Calcarea carbonica
  44. 44Calendula officinalis
  45. 45Camphora officinalis
  46. 46Cannabis indica
  47. 47Cannabis sativa
  48. 48Cantharis vesicatoria
  49. 49Capsicum annuum
  50. 50Carbolicum acidum
  51. 51Carbo animalis
  52. 52Carbo vegetabilis
  53. 53Caulophyllum thalictroides
  54. 54Causticum
  55. 55Chamomilla
  56. 56Chelidonium majus
  57. 57China officinalis
  58. 58Cicuta virosa
  59. 59Cimicifuga racemosa
  60. 60Cina maritima
  61. 61Coca
  62. 62Cocculus indicus
  63. 63Coffea cruda
  64. 64Colchicum autumnale
  65. 65Collinsonia canadensis
  66. 66Colocynthis
  67. 67Conium maculatum
  68. 68Crocus sativus
  69. 69Crotalus horridus
  70. 70Croton tiglium
  71. 71Cuprum metallicum
  72. 72Cyclamen europaeum
  73. 73Digitalis purpurea
  74. 74Dioscorea villosa
  75. 75Diphtherinum
  76. 76Drosera rotundifolia
  77. 77Dulcamara
  78. 78Equisetum hyemale
  79. 79Eupatorium perfoliatum
  80. 80Euphrasia officinalis
  81. 81Ferrum metallicum
  82. 82Fluoricum acidum
  83. 83Gelsemium sempervirens
  84. 84Glonoinum
  85. 85Graphites
  86. 86Hamamelis virginiana
  87. 87Helleborus niger
  88. 88Helonias dioica
  89. 89Hepar sulphur
  90. 90Hyoscyamus niger
  91. 91Hypericum perforatum
  92. 92Ignatia amara
  93. 93Iodium
  94. 94Ipecacuanha
  95. 95Kalium bichromicum
  96. 96Kalium bromatum
  97. 97Kalium carbonicum
  98. 98Kalmia latifolia
  99. 99Kreosotum
  100. 100Lac caninum
  101. 101Lac vaccinum defloratum
  102. 102Lachesis muta
  103. 103Ledum palustre
  104. 104Lilium tigrinum
  105. 105Lobelia inflata
  106. 106Lycopodium clavatum
  107. 107Lyssinum
  108. 108Magnesium carbonicum
  109. 109Magnesium muriaticum
  110. 110Magnesium phosphoricum
  111. 111Medorrhinum
  112. 112Melilotus alba
  113. 113Menyanthes trifoliata
  114. 114Mercurius corrosivus
  115. 115Mercurius cyanatus
  116. 116Mercurius dulcis
  117. 117Mercurius iodatus flavus
  118. 118Mercurius iodatus ruber
  119. 119Mercurius sulphuricus
  120. 120Mercurius solubilis
  121. 121Mezereum
  122. 122Millefolium
  123. 123Muriaticum acidum
  124. 124Murex purpurea
  125. 125Naja tripudians
  126. 126Natrium carbonicum
  127. 127Natrium muriaticum
  128. 128Natrium sulphuricum
  129. 129Nitricum acidum
  130. 130Nux moschata
  131. 131Nux vomica
  132. 132Opium
  133. 133Petroleum
  134. 134Petroselinum sativum
  135. 135Phosphoricum acidum
  136. 136Phosphorus
  137. 137Physostigma venenosum
  138. 138Phytolacca decandra
  139. 139Picricum acidum
  140. 140Platinum metallicum
  141. 141Plumbum metallicum
  142. 142Podophyllum peltatum
  143. 143Psorinum
  144. 144Pulsatilla pratensis
  145. 145Pyrogenium
  146. 146Ranunculus bulbosus
  147. 147Ratanhia peruviana
  148. 148Rheum palmatum
  149. 149Rhododendron chrysanthum
  150. 150Rhus toxicodendron
  151. 151Rumex crispus
  152. 152Ruta graveolens
  153. 153Sabadilla
  154. 154Sabina
  155. 155Sambucus nigra
  156. 156Sanguinaria canadensis
  157. 157Sanicula aqua
  158. 158Sarsaparilla officinalis
  159. 159Secale cornutum
  160. 160Selenium metallicum
  161. 161Sepia officinalis
  162. 162Silicea terra
  163. 163Spigelia anthelmia
  164. 164Spongia tosta
  165. 165Stannum metallicum
  166. 166Staphisagria
  167. 167Stramonium
  168. 168Sulphuricum acidum
  169. 169Sulphur
  170. 170Symphytum officinale
  171. 171Syphilinum
  172. 172Tabacum
  173. 173Taraxacum officinale
  174. 174Tarentula hispanica
  175. 175Terebinthinae oleum
  176. 176Theridion curassavicum
  177. 177Thlaspi bursa pastoris
  178. 178Thuja occidentalis
  179. 179Trillium pendulum
  180. 180Tuberculinum bovinum Kent
  181. 181Valeriana officinalis
  182. 182Variolinum
  183. 183Veratrum viride
  184. 184Veratrum album
  185. 185Zincum metallicum

The printed book’s page index is not part of this edition.

All remedies in this book

185 remedies — jump to a letter or scroll the list.

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