I began taking Levaquin about 5 days ago for a sinus infection. I started to have joint pain right away. First my calves and ankles hurt, then the joint problems progressed to my knees, ankles, shoulders, hips, etc to the point my sleep was severely disrupted and daily activities became difficult. When I called to report this to my dr, she denied these problems were a side affect noted in the physician's info. THIS MUST CHANGE! Only the research done by my wonderful husband provided the awareness of this drug'e debilitating side affects, and I insisted I be switched to another antibiotic.