Boenninghausen in Therapeutic Pocket Book wrote about the relationship of remedies, which he called ‘Concordances’. The word concordance means –The inheritance by two related individuals (especially twins) of the same genetic characteristic, such as susceptibility to disease.

This is a novel and useful idea, as it gave a better understanding of the drug and points of contact with each other with regard to specific spheres, locations, modalities, tissues, etc.,

By working out these relationships, we can find out the remedy which is likely to follow the previous remedy after it has done its job, though partially. Thus we can find out the remedy that would complement the action of the first remedy, with regard to the case in hand and not by any rigid preconceived ideas.

Though the chapter has immense potential in its utility, in education and practice, it is yet to be made use in its full capacity. Most of the physicians do not make its proper use, due to want of adequate attention and understanding of the chapter, which seems as a sort of mystery. This part of the pocketbook has helped in solving many chronic cases and especially in their search for a second prescription.