McKesson

RANK7

America’s largest drug distributor—whose fiscal year ended early in the pandemic in March 2020—recorded a 7.8% revenue increase last year, owing to greater volumes and higher prices of the drugs it delivers. As with its two main competitors, Texas-headquartered McKesson continues to battle legal challenges over its role in the nation’s opioid epidemic. In 2020, the company was selected by the U.S. government as the main distributor for the nation’s COVID vaccines.