bladder infection
"I am prone to UTI's and never had a problem with this drug before.  Took my 2 doses on the first day, with what I thought was no problem woke up on day 2 vomiting.  Around 11am I tried a piece of toast, and took my 3rd dose with that. I was then okay til about 4:30, when I was sick again.  I have skipped doses 4 and 5 and am waiting to hear from the doctor about calling in a different prescription.  "