Drug guide

Allegra-D

Fexofenadine (fex-oh-FEN-a-deen) is an antihistamine and pseudoephedrine (soo-doe-e-FED-rin ) is a decongestant. The combination of these two medicines is used to treat the nasal congestion (stuffy nose), sneezing, and runny nose caused by hay fever.

The combination of Allegra-D is used to relieve hay fever and allergy symptoms, including runny nose; sneezing; stuffy nose; itchy throat; and red, itchy, tearing eyes. Fexofenadine is in a class of medications called antihistamines. It works by blocking histamine, a substance in the body that causes allergic symptoms. Pseudoephedrine is in a class of medications called decongestants. It works by drying up the nasal passages.

The combination of Allegra-D comes as an extended-release (long-acting) tablet to take by mouth. It is usually taken twice a day on an empty stomach. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take Allegra-D exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Swallow the tablets whole; do not split, chew, or crush them.

Buy Allegra-D (U.S. only) or read more info about Allegra-D.

Brand names:
- Allegra-D
- Allegra-D 24 Hour
- Fexofenadine and Pseudoephedrine