McKesson has tapped Brian Tyler to lead its huge U.S. pharmaceutical business as the unit's current president, John Figueroa, prepares to leave for the top spot at nursing-home pharmacy services provider Omnicare. The transition comes as McKesson, the largest U.S. pharmaceuticals distributor by revenue, has seen slight revenue and margin growth of late. In October it reported its fiscal second-quarter profit rose 8.6 percent as revenue fell short of analysts' views. Its pharmaceutical-distribution business, which makes up the vast majority of its top line, saw revenue increase 1.3 percent. McKesson release | Report