Is it possible that bananas help with seasonal allergies?

I have been suffering terribly the last few weeks with my spring allergies. I take Alavert every day and have been taking two a day over the last week. I bought some bananas yesterday and noticed my allergies are substantially less debilitating. It could be that pollen counts are just coming down, but I have not eaten a banana in months and wonder if the vitamins in them could have possibly helped. Any thoughts?