Sinusitis
"My 11 year old daughter has sinusitis and the Biaxin has quickly helped her feel better, but she vomited once on the 3rd day and again on the 4th day, both in the morning.  Not sure if it&#039;s the Biaxin, the dripping from her sinuses, or the combination.  The doctor didn&#039;t seem too concerned unless it persists.  "