Rudolf Arndt

Rudolf Gottfried Arndt (31 March 1835 – 29 January 1900) was a German psychiatrist from Bialken, district of Marienwerder.

Arndt studied in Greifswald and Halle.

As a student, his instructors included Felix von Niemeyer (1820–1871), Heinrich Adolf von Bardeleben (1819–1895), and Heinrich Philipp August Damerow (1798–1866).

In 1867 he obtained his habilitation, subsequently serving as director of the Irren-Heil- und Pflege-Anstalt in Greifswald.

[3] He is known today for the "Arndt-Schulz rule", a pharmacologic principle of homeopathy that is named in conjunction with German chemist Hugo Schulz (1853-1932).