I began taking levaguin on Wednesday. Thursday morning, upon awak...

I began taking levaguin on Wednesday. Thursday morning, upon awaking, I noticed tht my achilles tendons seem tight and sore, Friday moring, 10 minutes into my typical 3 mile jog, I pulled up with pain in the back of my thigh that was a either a strain, pull, tear or cramp. At any rate I could not continue to run. Saturday afternoon, getting off the couch, I felt the same sensations in the back of my leg, behind the right knee. Today, Sunday, these pains have now extended to my right calf. After reading the experiences of other Levquin users, I believe that these muscle and tendon problems stem from taking the drug. Because I must cure the condition for which the drug is perscribed, I will continue with the recommended dosage for a while and hope that the side effects go away. However, I would caution others, particularly those who are acustom to regular, stenous exercise, that this medicine may lead to damage of their muscles and tendons.