Several different products are available to treat seasonal allergies and chronic hives. One of the more popular choices is fexofenadine hydrochloride (HCl), sold under the brand name Allegra®. This medicine works by blocking the effects of histamine, which can help relieve most allergy symptoms, with the exception of nasal congestion.
Fexofenadine HCl is available in a wide variety of forms and strengths, and is usually taken once or twice a day. Most people tolerate it well, but side effects are possible, and people with certain medical conditions may need to avoid it. If you are unsure whether you can take this medication or not, check with your healthcare provider or pharmacist.
(Click Fexofenadine to learn more about this medication, including common side effects, important dosing tips, and whether women who are pregnant or breastfeeding can take it.)