What is the best way to stop a runny nose?

Identify the trigger: While there are many causes for runny nose, persistent runny nose with itching, sneezing, congestion, may be due to allergies. While there are many antihistamines and nasal sprays available to treat allergies, it is prudent to identify the trigger. If there is a way to avoid the trigger, that could result in less medication and less symptoms. See an allergist.

If it's allergies: Try an otc antihistamine like Cetirizine or fexofenadine. If they don't work, try a prescription nasal steroid spray- fluticasone is generic- or a prescription antihistamine nasal spray- no generics. If that's not working, see an allergist.