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What is Fexofenadine?

Fexofenadine, also known as fexofenadine HCI and sold under the brand names Allegra, Telfast and Fastofen (all of which contain fexofenadine), is an antihistamine. Histamine is a chemical that can build up in the body when it attaches to receptive cells, and causes symptoms such as sneezing, watery or itchy eyes and nasal swelling.

Antihistamines, including fexofenadine, can block a particular type of receptor for histamine, and prevent symptoms. Fexofenadine is classified as a second generation antihistamine, which means it doesn't enter the brain from the blood and will therefore limit drowsiness.

Uses for Fexofenadine

Fexofenadine is used in the treatment of seasonal allergies (hay fever or pollen allergy), limiting or decreasing the symptoms listed above (sneezing, runny nose, etc.). The medication is also used to treat chronic urticaria, which presents with blotchy, raised red bumps (or hives). Chronic urticaria is diagnosed when hives persist for longer than six weeks.

Fexofenadine is taken orally and is sold in tablet form.

Possible Side Effects of Fexofenadine

Side effects of fexofenadine are possible, but are generally not severe. Common side effects include headache, drowsiness and fatigue, diarrhea, vomiting, back, arm or leg pain, fever, dizziness, indigestion, respiratory tract infection and coughing.

Less common side effects include insomnia and other sleep issues, allergic reaction, rash, painful menstrual periods, difficulty breathing, swelling of the lips, mouth or throat and nervousness.

If you experience side effects while taking fexofenadine, talk to your doctor about alternative medications. If serious side effects occur, seek medical help immediately.

Warnings About Fexofenadine

The information listed here regarding fexofenadine is for reference purposes only, and should not be used in place of medical advice. Always consult a doctor before introducing a new medication into your health regimen for correct dosage and treatment information, proper monitoring and further side effects or possible interactions with other medications.

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