Public Citizen urges antibiotic warnings has now urged U.S. Food and Drug Administration to place a "black box" warning of tendon rupture on fluoroquinolones. The consumer advocacy group also urged the FDA in a petition to require pharmacists to issued patient medication guides that carry the warning. "Tendon ruptures associated with Tequin and these drugs continue to occur at a disturbing rate but could be prevented if doctors and patients were more aware of early warning signals, such as the onset of tendon pain, and switched to other antibiotics," said Sidney Wolfe, director of Public Citizen's Health Research Group. "The FDA must act and require black box warnings and patient information guides." Fluoroquinolones include Bayer's Cipro, Aventis' Penetrex, Bristol-Myers Squibb's Tequin, Ortho-McNeil's Levaquin and Merck's Noroxin. (Pharma Live)