bladder infection
"Have been taking this medicine for re-occurring UTI's; I take 500mg four times a day for 10 days. I have noticed that people have put mouth pain as a side effect, to be specific with me my tongue hurt which I found out it was "thrush". Easily taken care of with rinsing mouth out with colloidal silver or you can call your dentist and do what he/she recommends.  I have had the abdominal pain and diarrhea however to relieve me of the UTI this was well worth it."