No animal products and no wheat gluten worked for me....took couple years, but it worked. Had seasonal allergies so bad, that I would miss multiple weeks of work each year, that was fucked!
I see my buddies kids sniffiling/sneezing/coughing right now and it's tough to watch, cause' it's only gonna get worse.
Some people it's corn, others is rice.... but vegan, or better yet, low fat raw vegan with no wheat products makes the difference. It's actually a shock to walk outside right now and feel fine.
For those that eat whatever they want and have no issues, I envy your convenience.