I know Pepcid helps me when I have a stomach ache, but doesn’t help me with the phlegm. The only thing that actually helped some was Benedryl, but that can be constipating. I actually don’t cough from inside my lungs , I hack mucus like a Llama. I avoid potato chips, orange juice and nuts. It makes it so much worse. It almost seems like sinusitis with a food allergy I had scans done of my lungs and sinuses, and nothing shows up. I think that’s why some people don’t believe I have anything. I’m going to try Flonase again, maybe for a little longer. Hugs 🤗