Fluoroquinolone‐Associated Tendinopathy: Does Levofloxacin Pose the Greatest Risk?
Abstract
Fluoroquinolone antibiotics recently have gained increased national attention due to safety concerns. A well-described and serious adverse event associated with receipt of fluoroquinolones is tendinitis and tendon rupture. These tendon injuries can result in long-term sequelae, including chronic pain and mobility restrictions, and may warrant surgery. Due to the severity of these adverse events, a black box warning is included in the product labeling of all fluoroquinolones. In light of the mounting concerns surrounding fluoroquinolone-associated toxicities, the purpose of this clinical review is to provide a comprehensive summary of the risk of tendinopathy associated with levofloxacin, one of the most widely prescribed antibiotics in the United States, across in vitro, animal, and clinical studies, relative to other antibiotics. As part of this review, clinical presentation and onset, proposed mechanisms, patient-specific risk factors, and management of fluoroquinolone-induced tendon injury are summarized. Data were obtained from a comprehensive PubMed literature search and a review of U.S. Food and Drug Administration documents. Although tendinopathy is considered a fluoroquinolone class-wide toxicity, data from in vitro studies, animal studies, patient-level analyses, and large national and international surveillance reports suggest that levofloxacin, as well as its parent compound ofloxacin, possess higher propensities to cause tendon damage relative to other…
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