ALLEGRA ® is a seasonal allergy medicine. Allegra can relieve allergy symptoms such as runny nose, red, itchy eyes and sneezing. Fexofenadine, the active ingredient in Allegra, typically does not cause drowsiness which is a common side effect of other antihistamines.
Allegra is an antihistamine used to treat the symptoms of allergic rhinitis (allergies) and seasonal hay fever.
This medication contains an antihistamine and decongestant used to relieve allergy symptoms such as itchy, red eyes, stuffy nose and throat irritation.
How To Use Allegra
Take this medication by mouth on an empty stomach 1 hour before or two hours after meals as directed, usually twice daily. Taking this medicine with a high fat meal can decrease its effectiveness. Do not take antacids containing aluminum and magnesium within 2 hours of taking this medication. Swallow the medicine whole. Do not crush or chew the tablet, and do not take more than prescribed. Do not take this product within 14 days after stopping an MAO Inhibitor (see Drug Interactions).
Allegra Side Effects
Nausea, stomach upset, trouble sleeping, headache, or cold symptoms may occur. If these persist or worsen, notify your doctor promptly. Unlikely but report promptly: dizziness, mental/mood changes, fast heartbeat, fever. Very unlikely but report promptly: irregular pulse, seizures, fainting. Although drowsiness is very uncommon at usual doses under normal circumstances, be aware that this medication may have such an effect before performing tasks requiring alertness (e.g., driving). If you notice other effects not listed above, contact your doctor or pharmacist.
Tell your doctor your medical history, including: allergies, kidney/urinary problems, enlarged prostate, glaucoma (narrow angle), severe high blood pressure, heart disease, diabetes, thyroid problems (hyperthyroid). Limit alcohol intake, as it may aggravate drug side effects. This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor. The pseudoephedrine in this product is excreted into breast milk. Consult your doctor before breast-feeding. Caution is advised when this product is used in the elderly since this group may be more sensitive to side effects.
If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include irregular or unusually slow or fast heartbeat, unusual nervousness or excitement, rapid breathing, confusion, hallucinations, and seizures.
Do not share this medication with others.
Allegra Missed Dose
If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not “double-up” the dose to catch up.
Store at room temperature between 68 and 77 degrees F (20-25 degrees C) away from sunlight and moisture.
Revision date: July 9, 2011
Last revised: by Sebastian Scheller, MD, ScD
Drugs & Medications
CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.
The drug reference included in this section is provided by Cerner Multum, Inc., of Denver, Colorado. Armenian Medical Network receives monthly updates from Multum.