These documents include for each substance the symptoms it may cause on physical, emotional and mental levels; but also hold detailed information on how these symptoms are experienced and situations may aggravate or relief them. We call these descriptions ‘remedy pictures’.
These records are basically toxicology reports and are very extensive.
The details collected in the Materia Medica have been meticulously recorded after systematical experimentation whereby healthy persons were given that substance and observed for any symptoms resulting from that.