Allegra-D® (fexofenadine and pseudoephedrine) is a medication commonly used for treating seasonal allergies. It can be used to help relieve sneezing, nasal congestion, runny nose, and itchy or watery eyes.
The drug is available over the counter and comes in tablet form. Allegra-D tablets are available in a 12-hour and a 24-hour strength. It is typically taken either once or twice a day, depending on the product.
Allegra-D is a combination medication that contains an antihistamine and a decongestant. These components work by blocking the effects of histamine (to relieve allergy symptoms) and decreasing the swelling in the nasal passages (to improve nasal congestion).
While most people tolerate Allegra-D tablets well, side effects are possible. Some of the most common side effects that have been reported with this medicine include back pain, headache, insomnia, and dry mouth.
(Click Allegra-D to learn more about the effects of Allegra-D, for details on when and how to take this medication, and to find out what you should discuss with your healthcare provider prior to starting treatment.)