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Allegra is a non-prescription medication that is recommended for the relief of symptoms associated with seasonal and year-round allergies including sneezing, itchy palate, runny nose, and itchy, tearing, and redness of the eyes. Allegra contains an antihistamine known as Fexofenadine.
Allegra or generic Fexofenadine is also used to relieve the symptoms associated with an allergic skin reaction (chronic idiopathic urticaria) including hives and itchy skin. This medication usually starts to work within one hour.
Allegra or generic Fexofenadine is an antihistamine, which has the effect of blocking the chemical, histamine, in the body. Histamine is a naturally occurring chemical that is released as a reaction to pollen or other foreign invaders that the body perceives as being a threat. Allegra does not stop histamine from being released, but rather it blocks the effect that histamine has on the body. This means that when you take Allegra, you will still experience the allergic reaction, but you will not feel the symptoms that go along with it. The generic alternative is not manufactured by the company that makes the brand product.
Allegra or generic Fexofenadine may cause side effects such as upset stomach, headache or drowsiness. These tend to be mild and go away as the body adjusts to the medication.