Usually, you'll need nothing more than rest and plenty of fluids to treat the flu. But if you have a severe infection or are at higher risk for complications, your doctor may prescribe an antiviral drug to treat the flu which can shorten your illness by a day or so and help prevent serious complications. Lifestyle and home remedies: these measures may help ease your symptoms: 1-Drink plenty of liquids. 2-Rest, get more sleep. 3-Stay warm. 4-Consider pain relievers.