The bactericidal activity and postantibiotic effect (PAE) of levofloxacin a
gainst nine anaerobes were determined, Levofloxacin at concentrations of th
e MIC and twice the MIC was bactericidal at 24 h to five of nine and nine o
f nine strains, respectively. The PAE of levofloxacin following a 2-h expos
ure ranged from 0.06 to 2.88 h.