It sounds like you have been managing a runny nose with Allegra (fexofenadine), which is an antihistamine used to treat allergy symptoms. Since your runny nose has lasted a week despite this treatment, it’s important to consider other causes or the need for further evaluation.

• A runny nose lasting more than 7 days could be due to persistent allergies, a viral infection, or sinus issues.
• Allegra helps block histamine-related allergy symptoms but may not fully address infections or other causes.
• If you are also using Fevryl, please ensure it is taken as directed and check if it is intended for your symptoms.

I recommend seeing an ear, nose, and throat (ENT) specialist or your primary care doctor to evaluate your symptoms further, especially if you develop additional signs like facial pain, fever, or worsening congestion. They can determine if other treatments or tests are needed.

If you want, I can explain more about how antihistamines work or what other causes might be considered.To narrow down potential causes, we will need some more information.I understand you've been experiencing a runny nose for a week and have been using Allegra and Fevryl. Could you please share your age and gender?