A cold with a runny nose lasting for a week may continue because of viral infection, allergy, sinus irritation, pollution exposure, or weather-related sensitivity. Allegra may help allergy symptoms like sneezing and watery nose, while Fevryl is mainly used for fever and body pain relief. If the actual cause is sinus congestion, strong allergy triggers, or persistent viral irritation, symptoms may not improve quickly with these medicines alone. Warm fluids, steam inhalation, adequate rest, and proper hydration may help loosen mucus and reduce nasal irritation gradually. Avoid cold drinks, smoke, dust, strong perfumes, and sudden temperature changes because they may worsen the runny nose further. Sleeping with the head slightly elevated may also help improve nasal blockage during the night. Persistent symptoms can sometimes suggest sinus infection or allergic rhinitis rather than a simple cold. Avoid repeatedly changing or adding medicines without proper medical advice. Consult a doctor if you develop fever, facial pain, breathing difficulty, thick yellow or green mucus, ear pain, or symptoms continuing beyond another few days.