Thank goodness I looked this website up when I did. I had taken only one pill in the morning (was prescribed 2x daily along w/an antibiotic for ear/sinus infection) and was so nauseous that I barely ate all day. My congestion wasn't too bad so I didn't take another. My heart was also beating abnormally and I'm sure the only reason I could go to sleep at 2am was that I only took 1 pill in the morning. At first I thought these symptoms were caused by the antibiotic until I read everyone's reviews. I am throwing this in the trash.