Do NOT take Avelox! As a result of taking it for a sinus infection, I now have acute hepatitis. On Feb. 14, 2008, Bayer Corp., which makes Avelox, notified its doctors in Europe that dangerous liver damage and/or skin rashes can occur in "rare cases." U.S. docs weren't notified. My doc prescribed it to me along with prednisone. Gastric problems began almost immediately, but I didn't make the connection. I thought I just felt so bad because of the sinus infection. My urine turned orange and I became deathly ill. Tests revealed non-viral hepatitis (not contagious, in other words). My liver counts were in the thousands! They are slowly going down, but I have lost two months of my formerly active life so far. I lost 15 lbs. in a week. I am weak and still have problems eating. I was healthy as a horse before. My life was hell for the first month--sweating, itching, dry eyes, dry mouth, couldn't sleep, diarrhea. I still have no energy can can't eat enough to gain weight. You don't want to mess with your liver. I feel lucky that a GI doc has been watching my counts and guiding my care. All you can do is rest and try to eat and stay hydrated. I have a long way to go, but at least I'm not on the liver transplant list--it was that bad before. I am angry that U.S. doctors weren't warned. The side effects listed for Avelox don't mention what happened to me. I am trying to get info on a possible class action suit against Bayer for knowing this drug causes liver failure and not telling U.S. doctors.