How to Treat Influenza with Home Remedies? 1. Honey Honey is the best immune booster and also helps to reduce the symptom of common flu. The common flue is an infectious viral disorder that mainly affects the upper respiratory track of the body including the lungs, throat, and nose. The most common symptoms of Influenza are a runny nose, sore throat, headache, dry cough, and high fever. The antioxidant properties of honey protect cells from free radical damage and fights