sir, my sister aged 27 y is suffering from pusscells full field and pain in left kidney from last 50 days, we done pcnl operation in aug 13 for kidney stone , mid june14 we met dr who operate pcnl and he Rx sepmax bid for 15 days that time pus cells fullfield and culture report saysno patogenic organism grown on culure. we take 15 days medicine and done urine test that shows 40-50 HPF( 17.6.14) pus cells dr again Rx sepmax for 10 days bid but after 2-3 days pain occure , now we change the Dr and he done another urine report (21.6.14) that shows pus cells full field again and he Rx amoxiclave 625( augmentin 625) for 15 days ,after 15 days we done anoter urine test and this time pus cells was 20-30 HPF Dr again continue the augmentin 625 for another 7 days ,after 7 days urine report shows 15-20/HPF but now this time Dr change the antibiotic and Rx Niftran(ranbaxy) for one month OD,and lasix one on alternate days for one month . now i am confused what i can do what is your opinion on this ,. can i continue augmentin625 can i stop augmentin and start niftran as suggest by Dr can we give both niftran and augmentin together is ther any side effect by giving together. Kindly provide your views and help me. thanks