I was given 750mg of levaquin for 8 days due to a cellulitis in my left knee. After taking the Levaquin I developed swelling in my leeft leg, foot and ankle and then in my right. I have had this condition now for almost a month. My legs are very soire to touch and at night feel like they are on fire. The tendons in the back of my legs are so very sore and stiff I can barely walk. My back is also affected with pain and stiffness. i have been to three doctors this past week. One ordeered an ultra-sound on my legs, thinking I may have a blood clot. Another has ordered an uoltra-sound on my chest, thinking I may be in congestive heart failure. The last one said therapy might help. None of the three seem to know the real cause. One doctor did say that Levaquin can in rare instances cause torn tendons of the legs or shoulder etc. I have no other explanation at this point but that it is the Drug. A miserable way to supposedly get over an infection!