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    The Nasal Flu Spray: Get the Facts

    What Are the Side Effects?

    They’re usually minor. But when they happen, they may look like flu symptoms. You might get a runny nose, chills, tiredness, headache, congestion, sore throat, and cough. Children might also get fever, muscle aches, wheezing, and tummy pain, vomiting, or diarrhea.

    Call 911 if you have any of the following symptoms. They can be signs of a severe reaction:

    • Hives
    • Swelling of the face and throat
    • Trouble breathing
    • A fast heartbeat
    • Dizziness
    • Weakness

    When Should You Get the Nasal Flu Spray?

    As soon as it’s available -- if possible by October. But you can still get vaccinated any time during flu season, which usually peaks in January or later. Once you use the nasal flu spray, it takes about 2 weeks to start working.

    WebMD Medical Reference

    Reviewed by Melinda Ratini, DO, MS on November 12, 2015
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