I am taking it for a UTI and I have broke out in a horrible rash from this or the Phenozpyridine that goes with it that turns your urine bright yellow. The rash is worst on my thighs and gets worse with heat. It is also a VERY painful rash that is spreading all the way from my face to the bottoms of my feet. At this point I can hardly walk between the thigh rash and feet rash.