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The Science of Homeopathy – page 206

and the process of potentization is merely an accessory factor. If the correct remedy is selected, then it will act curatively in any potency, even though a correct potency will act more gently for the comfort of the patient; conversely, an incorrect remedy can be either inactive or disruptive to a case, regardless of what potency is given.
Proper guidelines for selection of potency are difficult to define, because in any given case it is impossible to say what would have hap- pened if a different potency had been given. Suppose a patient is seen with arthritis, asthma, and anxiety about health; Arsenicum is given in a 30th potency, and a lasting cure occurs over a period of six months. One might conjecture that a 10M potency would have produced a cure in three months. This, however, cannot be proven because one cannot go back and give the 10M in order to see! In addition, one cannot re- ally compare two cases which seem similar and then give two different potencies; no two cases are ever exactly alike, so one case cannot le- gitimately be compared to another. The only circumstance where such comparisons have some validity is during a virulent epidemic in which many patients require the same medicine; indeed, it is in these circum- stance that the effectiveness of higher potencies can be convincingly demonstrated, but this experience cannot necessarily be transferred to chronic cases. Chronic cases involve a wide variety of factors, so any guidelines for potency selection in chronic diseases can only be con- sidered general impressions.
There are certain types of cases in which relatively low potencies should be used – at least initially. Patients who have weak constitutions, old people, or very hypersensitive people should initially be given po- tencies ranging, roughly, from 12x to 200. The reason for this is that higher potencies can overstimulate weakened defense mechanisms, re- sulting in unnecessarily powerful aggravations (aggravations will be discussed in the next chapter). This principle particularly applies to patients known to have specific pathology on the physical level – i.e., arteriosclerosis, cancer, coronary artery disease. When pathology has reached an advanced stage on the physical level, the constitution has likewise been relatively weakened, and administration of even the cor- rect remedy in high potency can lead to severe sufferings. Thus, in gen- eral it can be said that the more severe the state of physical pathology, the lower the potency that should be used for the initial prescription.
If a 12x potency is decided upon, it can be given frequently over a period of time, as long as careful instructions are given to discontinue it if any dramatic aggravation or amelioration of symptoms occurs. Amongst the patients weak enough to require a 12x potency, those with relatively greater vitality may repeat the doses three times daily