ABSTRACT
Objective To study the effect of lipide diet on pharmacokinetics of levofloxacin (Lfox) in beagle dogs .Methods In randomized cross over experiment ,6 Beagle dogs were given Lfox 10 mg/kg at the condition of empty stomach or with lipide diet for 2 week .Plasma concentration of Lfox was determined by HPLC at different time (during 48 h) .The pharmacokinetic parameters were calculated by 3p97 software .Results The plasma concentration-time curves were two compartment modelat the condition of empty stomach or lipide diet .Main pharmacokinetic parameters were as follows :t1/2β:(11 .07 ± 8 .46)and(21 .79 ± 4 .59)h ;tmax :(3 .42 ± 0 .41) and(2 .00 ± 0 .32)h;Cmax :(2 .71 ± 0 .60)and(2 .52 ± 0 .38)μg/mL ;AUC0→ t :(36 .51 ± 8 .66) and(37 .19 ± 8 .21)μg · h-1 · mL -1 ,respectively .There were significant differences in pharmacokinetic parameters of tmax (P<0 .01)except for t1/2β、Cmax and AUC0→ t .Conclusion Lipide diet can quicken tmax ,has no effect on the absorption of Lfox .