Clarithromycin
"I recently started on Biaxin. My doctor prescribed it for my bronchitis and sinus infection. The antibiotic works great, after about a day of taking it I felt a million times better. It's a really strong antibiotic though which has caused some awful side effects including bad taste in mouth, nervousness and upset stomach /nausea . If you have to take this I suggest eating before taking it and carrying around mints for the taste in mouth. Good luck!"