April 29, 2017
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Allegra Patient Information Including Side Effects

Brand Names: Allegra, Allegra 24 Hour Allergy, Allegra Allergy, Allegra ODT, Aller-Ease, Children's Allegra Allergy, Children's Allegra ODT

Generic Name: fexofenadine (Pronunciation: FEX oh FEN a deen)

What is fexofenadine (Allegra)?

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.

Fexofenadine may also be used for purposes not listed in this medication guide.

Allegra 180 mg

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Allegra 30 mg

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Allegra 60 mg tab

oblong, peach, imprinted with E, 06

Fexofenadine 180 mg-MYL

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Fexofenadine 180 mg-TEV

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Fexofenadine 30 mg-MYL

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Fexofenadine 30 mg-TEV

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Fexofenadine 60 mg-MYL

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Fexofenadine 60 mg-TEV

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What are the possible side effects of fexofenadine?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop taking fexofenadine and call your doctor if you have fever, chills, body aches, cough, or other flu symptoms.

Less serious side effects may include:

  • nausea, diarrhea, upset stomach;
  • menstrual cramps;
  • drowsiness, tired feeling;
  • headache; or
  • muscle or back pain.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the Allegra (fexofenadine hcl) Side Effects Center for a complete guide to possible side effects

What is the most important information I should know about fexofenadine?

Ask a doctor or pharmacist before taking this medicine if you are allergic to any drugs, or if you have kidney disease.

Do not take fexofenadine with fruit juice (such as apple, orange, or grapefruit).

Take the disintegrating tablet on an empty stomach, at least 1 hour before or 2 hours after a meal.

There may be other drugs that can affect fexofenadine. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.

Stop using this medication and get emergency medical help if you think you have used too much medicine, or if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Tell your doctor if your symptoms do not improve, or if they get worse after you start taking fexofenadine. Never use more than the recommended dose.

Side Effects Centers

Allegra - User Reviews

Allegra User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Allegra sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Allergies & Asthma

Improve treatments & prevent attacks.