Sulfamethoxazole / trimethoprim
"When I went to the doc, I had been experiencing the UTI for like a day before. A week before that, I actually had one, but my grandmother gave me cephalexin (one every 12 hrs for 2 days) and it seemed to work.. But since it was only enough for two days, I guess it decided to come back. My doc tested me for a UTI and gave me this sulfa drug, and it worked for one day. Thats it. I've read these reviews and if you go see the doc, ask him/her about taking your urine sample to a lab. My doc told me to do this so she could use the results to put me on an antibiotic that targets the exact bacteria my body is dealing with. This sulfa drug is the general drug. I highly recommend getting the lab test in case the sulfa prescription doesn't work for you."