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Buy Generic Allegra online Allegra (generic name: Fexofenadine; brand names: Telfast / Fastofen) is in a class of medications called antihistamines. Allegra is indicated for:
relief of symptoms associated with seasonal allergic rhinitis in patients 2 years of age and older;
treatment of uncomplicated skin manifestations of chronic idiopathic urticaria in patients 6 months of age and older.
One dose of long-lasting Allegra provides powerful relief from seasonal allergy symptoms (like sneezing, runny nose, itchy nose or throat, or itchy, watery red eyes) for a full 24 hours. That's four times longer than one dose of most over-the-counter allergy medicines. Many other seasonal allergy medicines come with warnings that they may cause drowsiness, so patients taking them should be cautious when driving a car or operating machinery. Allegra doesn't have this precaution, because it doesn't make you drowsy. Allegra - fexofenadine - is an oral, "second generation" antihistamine that is used to treat the signs and symptoms of allergy that are due to histamine. It is similar to the other second generation antihistamines loratadine (Claritin), cetirizine (Zyrtec) and azelastine (Astelin). Histamine is a chemical that is responsible for many of the signs and symptoms of allergic reactions, for example, swelling of the lining of the nose, sneezing, and itchy eyes. Histamine is released from histamine-storing cells (mast cells) and then attaches to other cells that have receptors for histamine. The attachment of the histamine to the receptors causes the cell to be "activated," releasing other chemicals that produce the effects that we associate with allergy, e.g., sneezing. Fexofenadine blocks one type of receptor for histamine (the H1 receptor) and thus prevents activation of H1 receptor-containing cells by histamine. Unlike the first generation antihistamines, fexofenadine and other second-generation antihistamines do not readily enter the brain from the blood, and, therefore, they cause less drowsiness. Fexofenadine was approved by the FDA in July, 1995. Buy Generic Allegra online
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