ANTACIDS CONTAINING ALUMINIUM AND MAGNESIUM, SECRALFATE, AND IRON PREPARATIONS REDUCE ITS ABSORPTION AND BIOAVAILABILITY. ENHANCES EFFECT OF WARFARIN. PROBENECID SLOWS THE RENAL ELIMINATION OF LOME-FLOXACIN. EFFECTS OF CIMETIDINE, CYCLOSPORINE HAVE NOT BEEN STUDIED. OMEPRAZOLE & PHENYTOIN HAVE NO SIGNIFICANT EFFECTS.