Esaias Fleischer was a Danish pharmacist.

He hailed from Silesia

Silesia

Silesia is a historical region of Central Europe located mostly in Poland, with smaller parts also in the Czech Republic, and Germany.Silesia is rich in mineral and natural resources, and includes several important industrial areas. Silesia's largest city and historical capital is Wrocław...

, and migrated to Denmark

Denmark

Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark...

 in the early 17th century. He is known as a pharmacist at least from 1613. In 1619 he was given the right to open a pharmacy in Bergen

Bergen

Bergen is the second largest city in Norway with a population of as of , . Bergen is the administrative centre of Hordaland county. Greater Bergen or Bergen Metropolitan Area as defined by Statistics Norway, has a population of as of , ....

 in the Province of Norway

Norway

Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

, but he probably did not take the offer. He continued his career in Copenhagen

Copenhagen

Copenhagen is the capital and largest city of Denmark, with an urban population of 1,199,224 and a metropolitan population of 1,930,260 . With the completion of the transnational Øresund Bridge in 2000, Copenhagen has become the centre of the increasingly integrating Øresund Region...

, and served as pharmacist for the Danish Royal Court

Danish Royal Family

The Danish Royal Family includes the Queen of Denmark and her family. All members except the Queen hold the title of Prince/Princess of Denmark with the style of His/Her Royal Highness or His/Her Highness. The Queen is styled Her Majesty. The Queen and her siblings belong to the House of...

 from 1633 to 1639.

In 1650 his pharmacy privilege was made heritable, and his son Gregorius Fleischer did inherit the pharmacy. Another son Esaias Fleischer

Esaias Fleischer (priest)

Esaias Fleischer was a Danish priest.He was a son of pharmacist Esaias Fleischer, and of Silesian roots. He studied at Sorø Academy before enrolling at the University of Copenhagen in 1652. He was influenced by Niels Svendsen Kronich, but because of this he deviated too much from the state church,...

 became a notable clergyman. The pharmacist was married twice, last to Maren Hansdatter, a sister of Hans Nansen

Hans Nansen

Hans Nansen was a Danish statesman.The son of a burgher, Evert Nansen, he was born at Flensburg. He made several voyages to the White Sea and to places in northern Russia, and in 1621 entered the service of the thriving Danish Icelandic Company...

's wife. He died in January 1663.