levofloxacin
2 interactions related to levofloxacin
levofloxacin + calcium
Calcium chelates levofloxacin in the gastrointestinal tract, reducing peak serum concentrations by 20 to 30 percent. While the area under the curve is less affected than with older fluoroquinolones, the drop in peak concentration can matter for organisms with MICs close to the breakpoint.
levofloxacincalciumfluoroquinoloneantibioticchelationabsorptionantacidsupplement timing
dairy + fluoroquinolones
Calcium and magnesium in dairy products chelate with fluoroquinolone antibiotics (ciprofloxacin, levofloxacin, moxifloxacin) in the gut, forming insoluble complexes that the body cannot absorb. Co-ingestion can reduce fluoroquinolone bioavailability by 30-50%, potentially causing treatment failure.
dairyfluoroquinolonesciprofloxacinlevofloxacincalciumchelationantibioticabsorption