When I read your post it brought back a time when I first became ill. I don't think its the levaquin but that you in fact may have developed what doctor's coin Environmental Illness which comes with various symptoms, from mental confusion, reduced cognitive function, chronic fatigue, fibromyalgia which presents as body pain (which could be a result of a magnesium deficiency), chemical sensitivity... I had the same thing happen to me that you described with inability to balance..it was like my inner ear turned up side down. i was falling off the toilet into the tub and had to be held up just to sit and void. I thought I was dying...but its been since 2001 that this occured. I have found great doctors in Nova Scotia at the NS Environment Health Centre who have helped me to get back my life. I would highly suggest getting a book on environmental illness and see if you find any similarities. I wish you good luck and don't be afraid to take levaquin..I think it was just a combination of all that your body was going through..I had the similar experience after the doctors tried me on Z-Pack ..it didn't work, then they gave me 2 weeks of Biaxin, still no improvement and then finally the Levaquin. You may want to get information on Candidais Albacanis to see if you have an overgrown cause that can cause alot of the symptoms. Good luck and don't hesitate to email back.