Runny nose

Patient: I’ve had terrible seasonal allergies my entire life (suspect allergies to dairy too) On my good days I have halfway access to breath through one nostril. Bad days, constant runny nose. Often to the point that I have to avoid drinking any liquid at all. It’s the only thing that slows it down.I’ve tried nasal spray, I just get painfully dry nostrils and sometimes a bloody nose. I take allergy pills, they don’t seem to have any effect at all. What else can I try?