my 80 yr old mother has tested positive for klebsiella in upper uti which presented with her vomiting once and nearly passing out before she was rushed to hospital for diagnosis. The doctor on staff put her on levoquin...but she reacted with severe diarrhea and her appetite began to shut down. We had to stop levoquin. Now he wants to put her on Macrobid 500 mg. Problem is she used this once before. My mother has a lung issue already and we know this will not go down well. Understand aggressive treatment is usually needed to stop Klebsiella, but we don't want to further injure my Mother...any suggestions on an approach without using these harmful antibiotics?