sinusitis
"Day 8. I have had the most severe sinus/double infection of my life and this medication has helped tremendously! I was worried it wasn't working at first but by day 5, I felt so much better!! On the down side, I have terrible headaches almost all day. I'll skip a day then the headache is back. Ibuprofen helps a little bit not much. Dizziness is terrible also. I have a little confusion and frustration at times. Its not too bad. Just the AWFUL headaches but I remember how bad my infections were before this medicine and it's worth it. Slight diarrhea but no big deal."