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Abstract
Infections due to Gram-positive microorganisms are increasing all over the world. Treatment options in infections caused by resistant Gram-positive bacteria are limited. Daptomycin is the first member of cyclic lipopeptide agents. Its spectrum of activity is the Gram-positive organisms, including resistant species such as methicillin-resistant Staphylococcus aureus, vancomycin-intermediate S. aureus, vancomycin-resistant S. aureus, and vancomycin-resistant enterococci. Daptomycin has been approved for the treatment of complicated skin and soft tissue infections, S. aureus bacteremia and right-sided infective endocarditis. The recommended dosing regimen is 4-6 mg/kg IV once daily. Dose adjustment is necessary in renal failure. Primary toxicity of daptomycin is reversible dose-related myalgias and weakness.