Allegra (fexofenadine) is an over-the-counter allergy medication used to treatseasonal allergysymptoms.
In 2011, Allegra transitioned from prescription-only availability to over-the-counter purchase.
In addition, it is now available in generic form.
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Allegra-D is a combination of fexofenadine and pseudoephedrine.
It can be used to treat seasonal allergies or relieve congestion (stuffy nose).
Fexofenadine, an antihistamine, is the active ingredient in the brand-name medication Allegra.
Many store brands and other companies are now able to offer generic fexofenadine.
Allegra-D is different in that it is a combination medication.
It contains both fexofenadine and pseudoephedrine.
Pseudoephedrine is a decongestant.
Allegra-D fights both sneezing/runny nose and congestion.
The “D” stands for decongestant, which will help relieve sinus congestion.
Is Allegra or Allegra-D More Effective?
There are no head-to-head trials to compare the effectiveness of Allegra and Allegra-D.
Ask your healthcare provider if you have any questions about which one you should choose for your symptoms.
It should be taken on an empty stomach with a full glass of water.
Taking it with fruit juice could make it less effective.
Histamine is what causes allergy symptoms when a person is exposed to an allergen.
Unlike some other antihistamines, Allegra does usually not cause drowsiness.
Certain serious side effects should not be ignored.
If you experience any of the following, contact your healthcare provider right away.
Allegra-D also contains pseudoephedrine, which temporarily relieves nasal congestion by narrowing blood vessels in the nasal passages.
For Allegra-D, there may be risks involved if you have certain conditions.
Summary
Allegra (fexofenadine) is an antihistamine used to treat seasonal allergy symptoms.
Allegra-D contains fexofenadine along with pseudoephedrine, a decongestant.
Both medications treat allergy symptoms while Allegra-D may provide additional relief for nasal congestion.
Common side effects for both Allegra and Allegra-D include headache, nausea, and stomach pain.
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