Could i be allergic to the pesticide with caffeine not the caffeine itself?

Question

Caffeine gives me pretty bad sinus problems that hurt my face, head, and even my jaw. I have had sinus problems due to a cold or the flu but it never got as bad as when caffeine is in my system.

Answer 1

You could try an organic coffee, but my guess is that it's the dehydration that's part of caffeine consumption. (Coffee makes you pee more than you drank.)

Answer 2

There is no pesticide in caffeine.