In Austria, Germany, Italy, Rumania and Russia the number of pharmacies is limited according to the population.
After acting as assistant in pharmacies at Quedlinburg, Hanover, Berlin and Danzig successively he came to Berlin on the death of Valentin Rose the elder in 1771 as manager of his business, and in 1780 he started an establishment on his own account in the same city, where from 1782 he was pharmaceutical assessor of the Ober-Collegium Medicum.
Where the number of pharmacies is limited by law prescriptions may only be dispensed at these establishments.
The prices charged for dispensing are lower in countries where the number of pharmacies is limited by law, the larger returns enabling the profit to be lessened.
In 1836 he was appointed to the chair of chemistry in the medical faculty at GÃ¶ttingen, holding also the office of inspector-general of pharmacies in the kingdom of Hanover.