what symptoms does allegra treat
Allegra (fexofenadine hydrochloride) is an antihistamine used to treat allergic symptoms of seasonal allergic rhinitis (sneezing, runny nose, itchy or watery eyes), and urticaria (hives).Allegra is available as a generic drug termed fexofenadine hydrochloride.top taking fexofenadine and call your doctor if you have fever, chills, body aches, cough, or other flu symptoms. Less serious side effects may include: 1  nausea, diarrhea, upset stomach; 2  menstrual cramps; 3  drowsiness, tired feeling; 4  headache; or. 5  muscle or back pain.