urinary tract infection
"Had to stop taking this after day 4 of 7. First time I was prescribed this. I am Allergic to sulfa antibiotics and usually have good results with amoxicillin with no side effects. This drug Gave me headaches, made me tired and experienced the most severe gas pains in my abdomen I've ever had for hours each day. Did help clear the UTI after a few days though.  Hopefully 4 days was enough to keep UTI away."