sinusitis
"I was prescribed Levaquin for acute sinusitis and I had a horrible experience after only the first dose.  My arms, hands and ankles were tingling and my knees hurt.  I got extremely cold and was shaking uncontrollably.  It was then I read the 10 page 'black label warnings' that the pharmacist gave me.  This drug will do severe damage to your tendons and after only one dose, I was feeling the effects.  My joints kepts popping non-stop with everything I did - walk, type, etc.  My joints ached as well.  My DR immediately switched me to another drug.  The literature claims people can blow out their tendons rather easily, even months after taking the medicine.  Not worth the risk of future joint damage when there are other drugs out there."