Your comment caught my attention as you are a fellow allergy/sinus sufferer albeit under control.

Until I started taking Allegra for about the past week, I had zero issues with producing enough sputum for a culture. It seems the daily Allegra has diminished my chest mucus significantly. I’m thinking my sinuses were draining into my lungs overnight and giving me a bunch of gunk the next day to cough up. Now that I’ve started the Allegra it’s amazing how little I get up upon clearance. I hope this is a good thing!