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Fexofenadine is an antihistamine used to relieve allergy symptoms and hives. It blocks the effects of histamine, a substance involved in allergic reactions. It is available in several oral forms, including tablets and liquid.
read more about fexofenadine ...Fexofenadine relieves symptoms such as sneezing, a runny nose, and itchy or watery eyes. It also treats itching and redness caused by hives. It controls symptoms while the medicine is working but does not remove the underlying allergy.
Histamine attaches to receptors in the body and causes symptoms such as itching and sneezing. Fexofenadine blocks these receptors. This reduces the effects of histamine during an allergic reaction.
Take fexofenadine with water according to the directions for the specific product. Depending on the formulation, it is taken once or twice daily. Avoid taking it with apple, orange, or grapefruit juice, which can reduce absorption.
Headache, nausea, or dizziness can occur. Ask a clinician about its use if you have kidney disease. Separate fexofenadine from antacids containing aluminum or magnesium by a few hours.
No. Orange, apple, and grapefruit juice can reduce the amount absorbed. Take it with water instead.
Yes. It can reduce the itching and redness associated with hives. Hives with breathing trouble or swelling of the throat need emergency care.
Some antacids interfere with its absorption. Take aluminum- or magnesium-containing antacids a few hours apart from fexofenadine.
Yes. An oral suspension is available. Shake it as directed and measure doses with an appropriate device.
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Fexofenadine (Allegra): Uses & Side Effects. Cleveland Clinic. https://my.clevelandclinic.org/health/drugs/20104-fexofenadine-capsules-or-tablets. Date Accessed October 6, 2026.
Fexofenadine (oral route) - Side effects & dosage. Mayo Clinic. https://www.mayoclinic.org/drugs-supplements/fexofenadine-oral-route/description/drg-20067082. Date Accessed October 6, 2026.
FEXOFENADINE HYDROCHLORIDE tablet. DailyMed (National Library of Medicine). https://www.dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=1d46555d-827b-b154-e063-6294a90ad3d5. Date Accessed October 6, 2026.
Fexofenadine Suspension. Cleveland Clinic. https://my.clevelandclinic.org/health/drugs/19049-fexofenadine-suspension. Date Accessed October 6, 2026.