my mom is 63yrs old,diabetic & hbp.Her nurse told her 2day 2 stop taking the water pills because they wil mess up her kidneys. She has been taking them for 3 months. 2 weeks ago, her creatinin level was at 8. She has fell a couple of times. She says it feels like cornmeal under her left foot and both hands. She urinates often but, is constipated alot. Can u plz give me some answers?