Hello,
I was prescribed levofloxacin 750 on Friday January 6th. I only took one pill and then thought to look st side effects seeing as I was never on this before. After careful thought I decided not to take this, the risk of permanent side effects didn't seem worth it. I started feeling muscle soreness in knees calves and arms and some tingling in my feet late Saturday, on and off since then. Not severe, but am concerned. How long does this stay in your system and could only one pill cause permanent problems?