I also have birch pollen allergies. Usually can't eat apples in the Spring either because there is a cross reaction to those.found a study from 2020 that shows herpes viruses react in patients who are very allergic to birch tree pollen. I
am off on holiday soon so I need my kidneys to be stone free! Think I passed one last night fingers crossed.
There is an herb that's supposed to be helpful with kidney stones called Chanca Piedra, I think. Not sure how well it works though.