The question of potency selection has always kept the Homeopaths of all times wondering and with different views. The homeopath should be open to use the entire range of potencies, from lowest to the highest, depending upon the demand of the case. The choice of potency would depend upon each individual case. Close states " All the potencies may be needed. No one potency, high or low, will meet the requirement of all cases at all times ."
     Homoeopaths need not be satisfied only with the selection of the similimum but also with the selection of the proper potency. Kent states, " When a remedy is correct, it will always work, whatever the potency. How deep and how long the remedy will work, depends on the potency. " The potential of the remedy must meet the requisite susceptibility.

The question of potency selection is not a simple one. Totality is made up of various components. The potency selection depends on various components and not on a single factor. Certain guidelines have been laid down though; there are no fixed laws for the selection of the potency.

Certain factors for selection of potency are —

1)      Disease Potential —  Disease-potential involves various factors:

a)      Value of symptoms,

b)      Nature & seat of disease,

c)      Tissue affinity,  

d)      Pathology involved,

e)      Duration of Pathology and Pace.

 2)  Sensitivity and Susceptibility - Sensitivity and Susceptibility are denoted as high, moderate and low. High sensitivity shows a high level of reactivity. 

3) Miasmatic Interpretation.

4) Similarity: Degree and Level.

5) Suppression.

6) Type of the Patient.

Indications of high & low potency are simplified below in a tabular form for the easy comprehension of a homoeopath.

If one is sure about the similimum but the desired action is not aroused then, try changing the potency to higher or lower before changing the medicine itself.