Fexofenadine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.

Fexofenadine is used to treat the symptoms of seasonal allergies (hay fever) in adults and children.

Fexofenadine is also used to treat skin itching and hives caused by a condition called chronic idiopathic urticaria in adults and children.

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  • Allegra, Allegra 24 Hour Allergy, Allegra Allergy, Allegra ODT, Aller-Ease, Children's Allegra Allergy, Children's Allegra ODT
  • Severity: Major
    You should check with your doctor immediately if any of these side effects occur when taking fexofenadine:

    Rare:
    Chest tightness
    feeling of warmth, redness of the face, neck, arms and occasionally, upper chest
    large, hive-like swelling on face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
    shortness of breath, difficult or labored breathing
    Severity: Minor
    Some of the side effects that can occur with fexofenadine may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

    More common:
    Vomiting
    Less common:
    Back pain
    body aches or pain
    chills
    coughing
    diarrhea
    difficulty with moving
    dizziness
    ear congestion
    earache
    fever
    headache
    joint pain
    loss of voice
    muscle aching or cramping
    muscle pains or stiffness
    nasal congestion
    nausea
    pain in arms or legs
    pain or tenderness around eyes or cheekbones
    painful menstrual bleeding
    redness or swelling in ear
    ringing or buzzing in ears
    runny or stuffy nose
    sleepiness or unusual drowsiness
    sneezing
    sore throat
    stomach upset
    swollen joints
    unusual feeling of tiredness or weakness
    viral infection (such as cold and flu)
    Rare:
    Nervousness
    rash
    sleeplessness
    terrifying dreams
    trouble sleeping
  • (fexofenadine hydrochloride) tablet, film coated; tablet, orally disintegrating; oral suspension