I have chronic and fungal sinusitis and was prescribed Singulair ...

I have chronic and fungal sinusitis and was prescribed Singulair as of last week. I also had asthma most of my childhood but it went away around the age of 16. I am now 37 and only suffer from the allergies and sinus. Since taking the Singulair along with the antibiotic Biaxin I have started having the same tightness in my chest as when I had asthma, I have started wheezing again, am frequently dizzy and get extremely drained from the slightest exertion of energy. that being said, I exercise regularly and am very conscious of what I eat and haven't had that experience in some time. I am calling my Dr. and will stop taking this medicine as of today. Thank you for your post, I thought I was on my own, because whenever I ask Dr.'s they always say there are no side effects with this drug. Believe me , I always ask because I am generally apprehensive about taking drugs for reasons of side effects. However, after having been to several specialist over the last 35 years I've finally had to accept the fact that the only way to treat what I have and have a better qualtiy of life for me and my family is by taking something that hopefully minimizes my problems with the least side effects. Obviously, Singulair is not it. If anyone else suffers from chronic sinusitis and has found something that works with little side effects, please let me know. Thanks Robert P