Kempthorne Prosser
Kempthorne Prosser & Co. Ltd, also known as the New Zealand Drug Company Ltd, was the leading drug and fertiliser manufacturer in New Zealand from 1869 until 1978. The company's full name was Kempthorne Prosser & Co.'s New Zealand Drug Co. Ltd, established in the South Island city of Dunedin.
Thomas Whitelock Kempthorne and Evan Prosser entered into business together in 1870 as chemists. They set up Kempthorne Prosser, which became a limited liability company in 1879. The head office was set up on Stafford Street in City Rise, Dunedin. In 1904 Thomas Whitelock Kempthorne retired. Kempthorne Prosser & Co became Kempthorne Prosser & Co. Ltd in 1879 when the New Zealand Drug Company was formed.