Tyson, I hadn't had any problems with this. Then I got runny nose, draining in my throat, and coughing twice in the last 2 months. Went away on its own the first time after 2 weeks. I always take Zyrtec and Flonase in the morning and Singulair at night, whether I have symptoms or not.

It came back 2 weeks later and I went to the Dr. for an antibiotic, I got a Zpack (Zithromax). It went away a day into starting the Zpack. I went to the Dr. right away that time because I was traveling to visit relatives who are heavy smokers and I knew that would aggravate things. I can't stand cigarette smoke.

I think I read somewhere that antibiotics are not good with either Mestinon or CellCept, but I am not sure which one or if I even read that anyone else know if antibiotics can be taken with these?