# Hugo Paul Friedrich Schulz

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German chemist (1853–1932)

**Hugo Paul Friedrich Schulz** (August 6, 1853 – July 13, 1932) was a German [pharmacologist](/source/Pharmacology) from [Wesel](/source/Wesel), [Rhenish Prussia](/source/Rhenish_Prussia).

Commemorative plaque for Schulz at Bahnhofstraße 51 in Greifswald.

He studied medicine in the universities of [Heidelberg](/source/University_of_Heidelberg) and [Bonn](/source/University_of_Bonn), where he did scientific work in the [physiological](/source/Physiology) institute of [Eduard Friedrich Wilhelm Pflüger](/source/Eduard_Friedrich_Wilhelm_Pfl%C3%BCger) (1829-1910). In 1877 he earned his doctorate, and afterwards worked in the pharmacological institute of [Karl Binz](/source/Karl_Binz) (1832-1913) at [Bonn](/source/Bonn). In 1883 he was appointed professor of pharmacology at the [University of Greifswald](/source/University_of_Greifswald).

Schulz is known for his research of a [phenomenon](/source/Phenomenon) known as [hormesis](/source/Hormesis), showing that the effect of toxins in small doses can be the opposite of their effect in large doses. He demonstrated this in experiments using chemical compounds on [yeast](/source/Yeast) cells.[1] From his research came the "[Arndt-Schulz rule](/source/Arndt-Schulz_rule)", a law concerning dosages in [toxicology](/source/Toxicology), named along with Dr. [Rudolf Arndt](/source/Rudolf_Arndt) (1835-1900).

Schulz published a number of works in the field of pharmacology, including the well-regarded *Pharmakotherapie* (1898), a treatise that was included in [Albert Eulenburg](/source/Albert_Eulenburg)'s *Handbuch der allgemeinen Therapie und der therapeutischen Methodik*.[2]

## Works

- *Die officinellen Pflanzen und Pflanzenpräparate : zum Gebrauch für Studirende und Ärzte übersichtlich zusammengestellt* . Bergmann, Wiesbaden 1885 [Digital edition](http://nbn-resolving.de/urn:nbn:de:hbz:061:2-10230) by the [University and State Library Düsseldorf](/source/University_and_State_Library_D%C3%BCsseldorf)

## References

- [*Hugo Paul Friedrich Schulz*](http://www.whonamedit.com/doctor.cfm/724.html) @ [Who Named It](/source/Who_Named_It)

1. **[^](#cite_ref-1)** [Encyclopedia of Quantitative Risk Analysis and Assessment, Volume 1](https://books.google.com/books?id=RI4otfaJW4MC&pg=PA840) edited by Edward L. Melnick, Brian S. Everitt

1. **[^](#cite_ref-2)** [The North American journal of homeopathy 1906](https://books.google.com/books?id=uslXAAAAMAAJ&pg=PA509)

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