High
Excellent
Pseudomonas and other gram negative infections of urinary tract, bone/joint, abdomen, lung, and other sites
QTc prolongation
Dysglycemia
CNS toxicity including confusion, psychosis
Tendinopathy and rupture
GI upset
Weakness exacerbation in myasthenia gravis
Rash
Retinal detachment
CYP1A2 inhibitor - multiple interactions possible
QTc prolongation - Increased risk with other agents that prolong QTc
Di- & Trivalent cations including Al, Ca, Fe, Mg (antacids, dairy products, iron supplements, some enteral feeds) - decreased absorption
Cyclosporine - increased levels of cyclosporine
Warfarin - increased INR
Decreases phenytoin levels
FDA Black Box warning against use in uncomplicated UTI, acute bacterial sinusitis, and acute exacerbation of chronic bronchitis where alternatives exist due to serious adverse side effects
May exacerbate muscle weakness in persons with myasthenia gravis. Avoid Use.
Antimicrobial class: Fluoroquinolone
Pregnancy category: C
Average serum half life: 4.0
Biliary penetration: Therapeutic
CSF penetration: Moderate
Lung penetration: Therapeutic
Urine penetration: Therapeutic