I have had an annoying cough for the longest. Went to every doctor and had a bunch of tests done from asthma to GERD. All negative. Found it it was like a combo of allergies and post nasal drip. Went on Zyrtec and it helped. That was a year ago. Now, I think the Zyrtec isnt working. 2 months ago, I added Singulair to my meds. I also added Flonase, Astelin, Nasonex and Rhinocort. Helped a little. But I still feel the need to cough throughout the day to clear some mucus or sometimes it clears nothing yet I still have the urge to cough----althouh not nearly as often as I did! Could the Zyrtec have no effect anymore since I have been taking it everyday for a year (just started Clarinex yesterday)? What other allergy meds and nasal sprays would be right to fight the PND and allergies? Thank you for any help.

I am also a year into allergy shots...who knows if they are even working. lol