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Fluoroquinolones have been associated with tendinopathies. The authors present three cases of Achilles tendinopathy in which the patients’ symptoms were preceded by treatment for unrelated bacterial infections with ciprofloxacin. Although the exact mechanism of the relationship is not understood, those who engage in sports or exercise should be advised of the risk of quinolone-induced tendinopathy. (J Am Podiatr Med Assoc 93(4): 333-335, 2003)