Fleroxacin is a new oral and intravenous trifluorinated 4-quinolone, w
hich acts by inhibiting the essential bacterial enzyme DNA gyrase. Fle
roxacin exhibits a broad spectrum of action, characterized by pronounc
ed activity against aerobic gramnegative bacteria, but also against gr
am-positive pathogens such as staphylococci. Fleroxacin is distinguish
ed by its excellent bioavailability, high concentrations in the plasma
and other body fluids, good tissue penetration, and a long half-life
of 10-12 h, thus allowing once-a-day administration. A single oral dos
e of 400 mg fleroxacin is effective in uncomplicated cystitis in women
, uncomplicated gonococcal infections, bacterial enteritis, and travel
er's diarrhea. A single daily dose of 200 mg administered for 3 days i
s effective in uncomplicated urinary tract infection (UTI), while long
er treatment and higher doses may be required in acute uncomplicated p
yelonephritis and complicated UTI. Skin, soft tissue, bone and joint i
nfections, and lower respiratory tract infections including exacerbati
on of chronic bronchitis and non-pneumococcal pneumonia are further in
dications for fleroxacin.