Hi, my 4yrs old has been diagnosed to have an acute sinus after a continuous experience of on-and-off cough, running nose and sometimes fever for months. I thought it was a regular flu until i feel that it is too often. The doctor said it was originally caused by an allergy, i haven t check it yet. So now, the doctor gave my kid 2 bottle of abbotic clarithromycin 3/4 tbsp twice a day. Is it safe? He also suggest to get him vaporized and shine with a micro wave or something daily for about 2 weeks. Is it the way to cure sinus? Thank you. Cheers, Angel