fexofenadine hydrochloride 120 mg

Last reviewed on RxList 6/27/2017

Allegra (fexofenadine hydrochloride) is an antihistamine used to treat allergic symptoms of seasonal allergic rhinitis (sneezing, runny nose, itchy or watery eyes), and urticaria (hives). Allegra is available as a generic drug. Common side effects of Allegra include

• nausea,
• diarrhea,
• upset stomach,
• muscle or back discomfort or pain,
• sleepiness,
• drowsiness,
• tiredness,
• headache, and
• menstrual cramps.

Contact your doctor if you have serious but less common side effects of Allegra including

• allergic reactions,
• fever,
• chills,
• body aches,
• cough, or
• other flu symptoms.

Allegra is available in several strengths and forms; as tablets in strengths of 30, 60 and 180 mg, as 30 mg fast orally disintegrating tablets (available in foil blister packs and labeled "ODT"; the drug should not be touched by skin as it may begin to dissolve and reduce the oral dose) and as an oral suspension of 30mg per 5 ml. The dosage is dependent on the age, weight and effectiveness of the drug; special care should be taken when prescribing this drug to infants and children to make sure the recommended dosage is given. Allegra may interact with other medicines that make you sleepy (such as cold or allergy medicine, sedatives, narcotic pain medicine, sleeping pills, muscle relaxers, and medicine for seizures, depression, or anxiety), ketoconazole, or erythromycin. Tell your doctor all medications and supplements you use. Tell your doctor if you are pregnant or plan to become pregnant while using Allegra; it is unknown if it will harm a fetus. It is unknown if Allegra passes into breast milk or if it could harm a nursing baby. Consult your doctor before breastfeeding. Note that the Allegra ODT tablets (orally disintegrating tablets) contain 5.3 mg of phenylalanine and should not be used by individuals with phenylketonuria.
Our Allegra Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

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.

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Allegra Consumer Information

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 entire detailed patient monograph for Allegra (Fexofenadine Hcl)