My mother, aged 68 years, was suffering from acute urinary tract infection for some time. she has undergone dilatation about 20 days back. doctor has prescribed urifast and roliflo for thirty days. After the dilatation and taking the above two medicines she is complaining about drowsiness, no energy, some times very low fever as well. I would thank you for advising is it because of the drug she is taking or there may be some other reason as well.