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- What is fexofenadine and pseudoephedrine, and how does it work (mechanism of action)?
- What brand names are available for fexofenadine and pseudoephedrine?
- Is fexofenadine and pseudoephedrine available as a generic drug?
- Do I need a prescription for fexofenadine and pseudoephedrine?
- What are the side effects of fexofenadine and pseudoephedrine?
- What is the dosage for fexofenadine and pseudoephedrine?
- Which drugs or supplements interact with fexofenadine and pseudoephedrine?
- Is fexofenadine and pseudoephedrine safe to take if I'm pregnant or breastfeeding?
- What else should I know about fexofenadine and pseudoephedrine?
What is the dosage for fexofenadine and pseudoephedrine?
Allegra-D usually is taken once or twice daily. The recommended dose is one 60/120 mg tablet twice daily or one 180/240 mg tablet once daily. Persons with kidney disease and elderly persons may only need to take one tablet per day. Allegra-D should be taken without food. It must be used cautiously in patients with heart (coronary artery) disease and angina, and diabetes because of the heart-stimulating effects of pseudoephedrine.
Which drugs or supplements interact with fexofenadine and pseudoephedrine?
Allegra-D should not be taken with monoamine oxidase (MAO) inhibitor drugs such as phenelzine (Nardil) and tranylcypromine (Parnate) because combining pseudoephedrine with MAO inhibitors can lead to dangerous increases in blood pressure and other serious side effects. Aluminum containing antacids (for example, Maalox) reduces the absorption of fexofenadine. Therefore, aluminum containing antacids and fexofenadine should not be administered together. Fruit juices (apple, orange, grapefruit) may reduce the absorption of fexofenadine, andexofenadine should only be administered with water.
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