Do not take this drug and exercise!! I was given samples of 750m...

Do not take this drug and exercise!! I was given samples of 750mg for 10 days for bronchitis. I was trying to get well for a 20 mile race that was quickly approaching. I have never had any side effects, so I was determined to get my runs in. After I felt a little better, I went on a long training run. My quads were on fire and I had no power in my legs. This does not happen ever during a long run. Needless to say, I did not make it to the race, but I did do a half marathon 6 days after my last dose. I had the same symptoms! Burning of the quads after only 6 miles, and loss of power in the legs. This stuff must stay in your system for a while. Afterwards I had a friend tell me (who works for an internist) that he never prescribes athletes this drug due to tendon damage! Repeat: do not take if you are an avid athlete!!