Analogue Medicines From Allen’s Keynotes:
| Vegetable Analogue | Chemical Analogue |
| Allium cepa | Phosphorus |
| Cinchona | Ferrum met. |
| Chamomilla | Magnesia phos. |
| Dulcamara | Kali sulph. |
| Ignatia | Natrum mur. |
| Ipecac | Cuprum met. |
| Mezereum | Mercurius |
| Phytolacca | Kali iod. |
| Podophyllum | Plumbum met. |
| Pulsatilla | Kali mur. |
| Valeriana | Platina |

