Daptomycin

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Background

  • Cyclic lipopeptide antibiotic that is active against Gram-positive bacteria

Mechanism of Action

  • Mechanism of action is to depolarize the cell membrane

Pharmacokinetics and Pharmacodynamics

  • Bactericidal
  • Distributes well into soft tissues and musculoskeletal system, as well as urine
    • Poor CNS penetration
    • Good lung penetration, but is inactivated by lung surfactant and should not be used to treat pneumonia