I am a 33 year old female, about 5'6 and 115 pounds and very athletic and take very good care of myself. On July 1st I went to my Dr. because I was so sick I thought I might have pneumonia. Sure enough, I did and was given 10 days of 500 mg. Levaquin. I took the medicine around 4pm. I woke up the next day with a headache, nausea, and before I even got out of bed, my heart started racing as if I was exercising. This lasted for an hour and a half......then I had to get up because I thought I was going to throw up. By this time I was sweating to death. I went into the bathroom and sweat some more, never threw up and my heart rate returned to normal. I was able to take a shower and then took some Advil and felt much better. I took my second dose later that afternoon. The next day I woke up with many aches and pains including swollen achilles tendons, a swollen elbow, hip pain, and very sore knees. I also noticed 5 hives on my arms, chest and neck. I compare them to mosquito bites, only bigger. I was a little slow on the up-take and took Levaquin until 7/8. It is now 7/14 and my joints and tendons are still VERY sore......I can't get through a day without taking Advil 2 or 3 times. I still have the hives and am ready to kill someone! I have taken a lot of medication throughout my life as I am asthmatic and I have never experienced a side effect. I called the pharmaceutical company to complain and to report my side effects to the FDA. My quality of life has been seriously tampered with and I am pretty resentful. My kids are small and active, not to mention I have a full time job. This drug is ridiculous, and in my opinion, should be taken off the market. What ever happened to good old Amoxicillin?