Prior to the drug's approval in the United States, one clinical study was conducted on 651 adults and adolescents. In this study, people taking fexofenadine and pseudoephedrine had improved allergy relief compared to the group of people not taking the medicine. This improvement was measured based on a symptom score that looked at changes in the following allergy symptoms:
Sneezing
Runny nose
Itchy nose and/or throat
Itchy, watery, and/or red eyes
Nasal congestion.
Fexofenadine and Pseudoephedrine: When and How Do I Take It?
Some general considerations for when and how to take fexofenadine and pseudoephedrine include:
Fexofenadine and pseudoephedrine medicine comes in tablet form. It is recommended that you take your dose on an empty stomach with a glass of water.
Taking fexofenadine and pseudoephedrine with food should be avoided.
Do not break, chew, or crush the fexofenadine and pseudoephedrine tablets.
Fexofenadine and pseudoephedrine should be taken at the same time each day to help maintain an even level of medicine in the blood. Do not take it more often than directed.
Fexofenadine 60 mg and pseudoephedrine hydrochloride 120 mg is usually taken twice a day. Fexofenadine 180 mg and pseudoephedrine hydrochloride 240 mg is usually taken once a day.
Occasionally, the inactive components of fexofenadine and pseudoephedrine may be eliminated in the feces looking very similar to the tablet.
For fexofenadine and pseudoephedrine to work properly, you have to take it as prescribed. Fexofenadine and pseudoephedrine will not work if you stop taking it.