Tigecycline tetramesylate (GAR-936 tetramesylate), a broad-spectrum glycylcycline antibiotic, exhibits a mean inhibitory concentration (MIC) for E. coli (MG1655 strain) of approximately 125 ng/mL [1]. For Acinetobacter baumannii (A. baumannii), the MIC 50 and MIC 90 values stand at 1 and 2 mg/L, respectively [2].