This website uses cookies. By continuing you are agreeing to our privacy policy.

Diagnosing and Treating Flu

There are effective treatments that can reduce the duration of the suffering caused by the flu and improve symptoms. See a healthcare provider as soon as flu symptoms appear to find out if these treatments are right for you.

How Is Influenza Diagnosed?

It is hard to know for sure you have the flu on based on symptoms alone. A doctor's exam may be needed to tell whether you have developed the flu or a complication of the flu. If you develop flu-like symptoms and are concerned about your illness because you are at high risk for complications or any other reason, you should talk to your healthcare provider. There are tests that can determine if you have the flu as long you are tested within the first two or three days of illness and many providers use antiviral medications when they are confident of the diagnosis.

How Is Influenza Treated?

Treating the flu includes staying home, getting adequate rest and staying hydrated. Your doctor may prescribe antiviral medication to treat the virus, and over-the-counter medication can be used to minimize discomfort associated with flu symptoms (for example, decongestant and antihistamine for congestion, cough and nasal discharge). Antibiotics are not useful in treating the flu but may be prescribed if necessary to clear up a related sinus or ear infection.

Antiviral Medication

There are two commonly used antiviral drugs: oseltamivir (trade name Tamiflu®), which comes in pill form, and peramivir (trade name Rapivab®), which is administered intravenously. These drugs have been shown to reduce flu symptoms if started within a day or two of getting sick. Zanamivir (trade name Relenza®) is another antiviral drug that is inhaled as a powder.  People with chronic lung disease, including asthma, should not use Relenza or Rapivab, because these drugs sometimes worsen breathing problems.

Antiviral medicine is recommended for people with more severe illness, especially those who might require hospitalization. Talk to your doctor about which of these treatments may be right for you.

Treatment with antiviral medicine is most important for people with suspected or confirmed influenza who are at higher risk for complications, including:

  • Children younger than 2 years old
  • Adults 65 years and older
  • Pregnant women
  • People with certain chronic medical conditions, such as asthma or COPD, or with suppressed immune systems

Learn more about preventing influenza.

    Reviewed and approved by the American Lung Association Scientific and Medical Editorial Review Panel. Last reviewed August 17, 2018.

    Page Last Updated: November 15, 2019

    Red button with telephone
    Ask An Expert

    Questions about your lung health? Need help finding healthcare? Call 1-800-LUNGUSA.

    Get help
    Red button of two hand prints
    We need your generous support

    Make a difference by delivering research, education and advocacy to those impacted by lung disease.

    Button of turquoise LUNG FORCE swirl
    What is LUNG FORCE?

    LUNG FORCE unites women and their loved ones across the country to stand together in the fight against lung cancer.

    Get involved
    Join the fight for healthy lungs and healthy air.
    Donate Now.


    Breathe Easy

    Give today and your tax-deductible gift will go TWICE as far for everyone who struggles to breathe.