I was prescribed Levaquin 750 mg 3 days ago for a sinus infection. The first day I was just in bed. I could not sleep because my neck hurt so bad. I figured I had slept funny on my pillow. The next morning I woke up and took my second pill. I got so very dizzy and when the lawn guy wanted a check, I discovered I could not write. My hands were so shaky and weird that I could not even write my name. I had to call someone to pick my son up from school because I was scared to drive. I could not sleep that night but did take my third pill. Today I got up and could not lift my right arm. My shoulder hurts so bad and I can't lift my arm without extreme pain. I am not going to take another dose. The Dr. did not tell me any of this could happen. I won't take this medication again. I hope I will be able to lift my arm soon and this horrible shoulder and neck pain will go away.