Boenninghausen's Therapeutic Pocketbook: A Historical and Methodological Assessment

Clemens Maria Franz von Boenninghausen (1785–1864) produced in his Therapeutisches Taschenbuch (1846) one of the most influential — and most contentious — contributions to homoeopathic methodology. Originally a botanist and jurist, Boenninghausen came to homoeopathy through his own cure by Hahnemann and became one of the master's most highly regarded correspondents.

The Pocketbook's methodological innovation lies in its systematic approach to the 'concomitants' of disease — symptoms that accompany the chief complaint without obvious pathological connection. Boenninghausen argued that these concomitants carried equal weight with the characteristic symptoms in determining the simillimum.