1830s
Early Pioneers
1833: Founded by John McKesson and Charles Olcott in New York City to import and sell therapeutic drugs and chemicals wholesale.
1853: Renamed McKesson & Robbins, after a new partner, Daniel Robbins. Distributing pharmaceutical products by covered wagon to 17 states and territories from Vermont to California.
1855: Became one of the first wholesale firms to manufacture drugs. The company’s fluid extracts, tinctures, pills and tablets won medals for its pioneering work.