Giardiasis
"I&#039;m taking 1x400mg tablet 5 times per day to treat giardia and although my diarrhea from the diardia has stopped, I now have terrible lower back pain and have experienced bad pains in my kidneys as well. Am currently paranoid because I think it&#039;s more than guardia due to all these extra pains I&#039;m having but the tablets have a bad reputation for flu like symptoms so I&#039;m hoping it&#039;s just that."