Add me to the list. The funny thing is, I've taken Levaquin 4 or 5 times in the past without noticing any problems, but last week I was put on Biaxin for a sinus infection and had a terrible time with it, so the Dr. changed me to Levaquin, and now after 3 days I'm back in the same boat...heart racing, unable to sleep, elevated blood pressure, nauseous. It feels like my heart is on fire! I'm stopping this one today (only had 2 left.) This is awful, I know I was very sick and had to have some antibiotic, but after these two experiences I think I'd stick with the sinus infection!