Clarithromycin
"I have chronic Sinisitis, for 20 years now, typically getting 2-3 sinus infections per year that reduce me to rubble for at least 10 days. I should know better at this point than to try yet another antibiotic, but nothing works anymore except Levaquin, and if I build up a resistance to that, I'm in big trouble if I ever get pneumonia. So here I am, up the third night in a row after starting the clarithromycin. I have been nauseous, gassy and utterly uncomfortable--I'm not taking another dose, calling my doctor and sticking to natural remedies. If that doesn't work, then looks like I'll be paying out of pocket for surgery since my sinus scan came back normal."