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Materia Medica Viva Volume 2 – page 261

AMMONIUM CARBONICUM
Carbonas [sub] ammonii Sal volatile anglicanum
English: Sesqui carbonate of ammonia; Smelling salts
French: Ammoniaque carbonate; Sous-carbonate d’ammoniaque; Alcali volatil
concret; Sel volatil d’Angleterre German: Fluchtiges Laugensalz
THE ESSENTIAL FEATURES
This is a complex remedy, one which is very little understood, and therefore seldom used. Most probably, other remedies, such as one of the Kali’s, especially Kali carbonicum, or Antimonium tartaricum or Carbo vegetabilis, are prescribed instead. Its symptomatology seems to be quite complex, covering a number of different pathological states, and its uniqueness is consequently difficult to grasp. Kent describes Ammonium carbonicum as "a deep-acting, constitutional remedy, an antipsoric."
I must here take issue with the expression "constitutional remedy" if the implication is that it is so because it is a deep-acting remedy. I have come to realize that all remedies can act deeply when they are truly indicated, when they are the "similimum." Consequently, any remedy may act as a constitutional remedy when appropriately prescribed. Any remedy, when only superficially prescribed, will have but partial action,
and, conversely, any remedy, when properly prescribed according to deeper indications, can affect the entire constitution. The strange phenomenon seen in everyday homeopathic practice is that many times superficial remedies have to be prescribed before the real constitutional remedy can take effect. I believe that Kent actually conceived of the constitutional remedy as having the broader definition specified above, and that his followers have sometimes misunderstood him to suggest a narrower interpretation.
Ammonium carbonicum is indicated in those cases with a flabby, obese appearance, very much like the Cushingoid appearance induced by exogenous cortisone ingestion. The face is pale, bloated and puffy, and