I was prescribed Levaquin 750 for 5 days for resolving pneumonia. I didn't finish the last pill due to increased heart rate and severe anxiety. These symptoms did stop for me. However, about a good 2-3 wks later my wrist started hurting. I thought I may have slept on it funny or something. Then a day or two later, my jaw started hurting so bad I couldn't chew at times. Another 2-3 days which leads me to today, I am having tingling/shock sort of feelings running thru my legs and arms and still having the jaw and wrist pain. I have an appt next week with my doc. I'm sure she'll send me thru all the tests everyone here has mentioned to no avail. This is very frustrating and scarey. I wish folks would repost and let the rest of us know how they are progressing. I will post back after my visit. I am going to try the magnesium and 5-htp the gentleman said worked for his wife. I am becoming a firm believer in a more holistic and natural approach to healing. I know sometimes chemical medicines save lives but this one has caused my life a lot of pain that I feel was not necessary for a very light case of walking pneumonia. Good luck to everyone. Please keep your progress updated to help the rest of us out.