Allegra Drug Information

Allegra® (
 fexofenadine hydrochloride) is a prescription antihistamine approved for the treatment of seasonal allergies and chronic hives and itching.
 
It works for these conditions by blocking the effects of histamine, chemicals in the body that can cause itching, sneezing, and irritation. Clinical studies show that people taking Allegra had an improvement in their hay fever symptoms (such as itchy or watery eyes, runny nose, and sneezing) and itching due to hives.
 
Even though most people respond well to Allegra, drug information should be reviewed with your healthcare provider before you begin treatment to minimize risks. In order to help ensure a safe treatment process, you should talk to your healthcare provider before using this allergy medicine if you have kidney disease or are currently pregnant or breastfeeding.
 
Potential side effects of Allegra include respiratory tract infection, back pain, headache, middle ear infection, and coughing.
 
(Click Allegra for more Allegra drug information, including details on how this medicine works, what you should be aware of before starting treatment, and when and how to take it.)
 
Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;