Learn about Allegra (Fexofenadine Hcl) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. Allegra (fexofenadine) is effective at reducing symptoms for seasonal allergies and chronic hives without significant drowsiness, unlike Benadryl. Get prescription-strength allergy relief from indoor and outdoor allergies without a prescription. Allegra, now over-the-counter (OTC), provides fast,* 24-hour, non-drowsy relief. Learn more about Allegra and save today. * Starts to work at hour one. Helpful answers from trusted Doctors on causes, diagnosis, symptoms, treatment, and more: Dr. Zacharisen delves into whether or not you should take Allegra and Zyrtec together for symptom relief. The pseudoephedrine in Allegra-D 24 Hour is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose). Allegra-D contains a combination of fexofenadine and pseudoephedrine. Fexofenadine is an antihistamine that reduces the effects of natural chemical histamine in the body. C'est le grand débat. Tout le monde pense connaître la meilleure pizzeria de Paris et elle est souvent dans sa rue. Sauf que c'est rarement le cas. Relieve your child’s worst indoor & outdoor allergy symptoms for 24 hours with Children’s ZYRTEC® Allergy Syrup. Learn more about syrup flavors today! Hyland's Seasonal Allergy Relief relieves common allergy symptoms including watery eyes, runny nose, sneezing, itchy eyes, nose, and throat, sinus pain and headache.* Non drowsy, all natural, gentle, safe & effective Contains no Pseudoephedrine ALLEGRA-D® 12 HOUR (fexofenadine hcl and pseudoephedrine hcl) (fexofenadine hydrochloride and pseudoephedrine hydrochloride) Extended-Release Tablets for oral administration contain 60 mg fexofenadine hydrochloride for immediate release and 120 mg pseudoephedrine hydrochloride for extended release.