ALLEGRA-D fexofenadine hydrochloride and pseudoephedrine hydrochloride tablet, film coated, extended release Allegra-D combines a non-drowsy antihistamine with an effective nasal decongestant called Pseudoephedrine. It’s designed to help keep you on top of your game by relieving cold-like symptoms, such as the swelling of nasal passages, that can come with allergies. Allegra-D 24 Hour an extended-release tablet tablet taken once daily and is used to treat sneezing, runny or stuffy nose, itchy or watery eyes, hives, skin rash, itching, and other symptoms of allergies and the common cold. Allegra-D ® tackles tough allergy symptoms and nasal congestion, so you can breathe easy and feel good all day. Whether you're dealing with sinus pressure, itchy eyes, or that frustrating blocked nose, this 12-hour dose delivers relief from eight allergy symptoms with just one tablet. Allegra-D ® tackles tough allergy symptoms and nasal congestion, so you can breathe easy and feel good all day. Whether you're dealing with sinus pressure, itchy eyes, or that frustrating blocked nose, this 24-hour dose delivers relief from eight allergy symptoms with just one tablet. Fexofenadine/pseudoephedrine, sold under the brand name Allegra-D among others, is a fixed-dose combination medication used for the treatment of nasal congestion and other symptoms of allergies [4] and the common cold. [2] Allegra-D (fexofenadine and pseudoephedrine) is used to treat sneezing, hives, runny or stuffy nose and other symptoms of allergies. Includes Allegra-D side effects, interactions and indications. Learn about Allegra-D (fexofenadine / pseudoephedrine) usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Allegra-D combines a non-drowsy antihistamine with an effective nasal decongestant called Pseudoephedrine. It’s designed to help keep you on top of your game by relieving cold-like symptoms, such as the swelling of nasal passages, that can come with allergies. Allegra-D combines a non-drowsy antihistamine with an effective nasal decongestant called Pseudoephedrine. It’s designed to help keep you on top of your game by relieving cold-like symptoms, such as the swelling of nasal passages, that can come with allergies.