Fexofenidine is an antihistamine that is used to treat hay fever/seasonal allergies. It can also treat itchiness and hives caused by chronic idiopathic urticaria. Don’t use fexofenidine in children without first obtaining medical advice. Fexofenadine tablets and capsules can treat seasonal allergy symptoms in children at least 6 years of age. Fexofenadine oral suspension can be used by children age 2-11. Oral suspension can treat chronic idiopathic urticaria in children as young as 2 months old.

The disintegrating tablet should be taken on an empty stomach 1 hour before or 2 hours after a meal. Do not take with fruit juice. The regular tablet should be taken with a full glass of water. Use dose-measuring device provided by pharmacist. For orally-disintegrating tablets: only open blister pack when you’re ready to use, use dry hands, and do not swallow tablet whole but let it dissolve, swallow several times as it dissolves.

Do not take fexofenadine with fruit juice. Always inform your doctor of your medical history and other drugs you take before starting a new medicine; for fexofenadine, this is especially important if you have other drug allergies or kidney disease. Also inform your doctor if you become pregnant or breast-feed. Drugs that may interact with fexofenidine include ketoconazole, erthromycin, and drugs that cause sleepiness. Overdose symptoms can include: dry mouth, dizziness, and drowsiness. Avoid antacids within 15 minutes before/after any medication that contains fexofenadine. Avoid other cold/allergy medications unless approved by your doctor.

Find emergency medical attention if you suspect an overdose or allergic reaction. Stop using this medication and call your doctor at once if you experience a serious side effect like fever, chills, body aches, cough, and other flu-like symptoms. Less serious effects may include digestive problems, menstrual cramps, fatigue, drowsiness, headache, and muscle or back pain. Talk to your doctor if you also take medications that cause sleepiness, such as sedatives, narcotics, antidepressants, and tranquilizers. Fexofenidine may interact with other drugs.