On the 9th or 10th day of the Levaquin, I started to experience severe
pain in both biceps, along the inside of my elbows. I also had less severe
pain in my shoulders, forearms, and the bottom of my elbows (the tennis elbow region). I was doing a lot of rock climbing at the time, so I credited the rock climbing as the cause of the tendinitis, and resolved to take some time off.