Allegra-D Side Effects

There are a number of side effects that may develop with the use of Allegra-D. Problems that were most commonly reported in clinical trials include nausea, dry mouth, headache, indigestion, and insomnia. Some of the rare side effects of Allegra-D (documented in less than 1 percent of patients) include unexplained rash, allergic reaction, or difficulty breathing.

An Introduction to Allegra-D Side Effects

As with any medicine, there are possible side effects with Allegra-D® (fexofenadine and pseudoephedrine). However, not everyone who takes Allegra-D will have problems. In fact, most people tolerate it well. When side effects do occur, they are generally minor and either require no treatment or can easily be treated by you or your healthcare provider.
 
In previous research studies, up to 3.7 percent of people stopped taking Allegra-D because of side effects.
 
(This article covers many, but not all, of the possible side effects with Allegra-D. Your healthcare provider can discuss a more complete list of Allegra-D side effects with you.)
 

Common Side Effects of Allegra-D

Allegra-D has been studied in clinical trials.
 In these studies, side effects are always documented and compared to those that occur in a similar group of people not taking the medicine. This way, it is possible to see what side effects occur, how often they appear, and how they compare to the group not taking the medicine.
 
Based on these studies, the most common side effects of Allegra-D included:
 
Other side effects that occurred in more than 2 percent of people included, but were not limited to:
 

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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;
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