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Hay fever is a misnomer. Hay is not a usual cause of this problem, and it does not cause fever. Early descriptions of sneezing, nasal congestion, and eye irritation while harvesting field hay promoted this popular term. Allergic rhinitis is the correct term used to describe this allergic reaction, and many different substances cause the allergic symptoms noted in hay fever. Rhinitis means "irritation of the nose" and is a derivative of rhino, meaning nose. Allergic rhinitis which occurs during a specific season is called "seasonal allergic rhinitis." When it occurs throughout the year, it is called "perennial allergic rhinitis." Rhinosinusitis is the medical term that refers to inflammation of the nasal lining as well as the lining tissues of the sinuses. This term is sometime used because the two conditions frequently occur together.
Symptoms of allergic rhinitis, or hay fever...
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This leaflet is a summary of important information about terfenadine. Be sure to ask your doctor if you have any questions or want to know more.
What is Terfenadine and What is it Used For? Terfenadine is an antihistamine. It is used to relieve symptoms of seasonal allergies or hay fever. These symptoms include runny nose, sneezing, itching of the nose or throat, and itchy watery eyes.
Clinical studies conducted to date with terfenadine have not demonstrated effectiveness in relieving the symptoms of the common cold.
How Do I Take Terfenadine? Take terfenadine only as needed when you have symptoms of seasonal allergy or hay fever.
What Are the Important Warnings About Using terfenadine? WARNING: DO NOT USE TERFENADINE IF YOU ARE USING KETOCONAZOLE (NIZORAL), ITRACONAZOLE (SPORANOX), ERYTHROMYCIN, CLARITHROMYCIN (BIAXIN), OR TROLEANDOMYCIN (TAO). IF YOU HAVE ANY LIVER OR HEART PROBLEMS, TALK TO YOUR DOCTOR BEFORE YOU USE TERFENADINE.
Do not use terfenadine with any other prescription or nonprescription medicines without first talking to your doctor and pharmacist.
If you faint, become dizzy, have any unusual heartbeats, or any other unusual symptoms while using terfenadine, contact your doctor.
If you become pregnant or are nursing a baby, talk your doctor about whether you should take terfenadine. Your doctor will decide whether you should take terfenadine based on the benefits and the risks.
What Are the Risks of Using Terfenadine? The side effects which occur most often are headaches and mild stomach or intestinal problems.
In rare cases, terfenadine has caused IRREGULAR HEARTBEATS which may cause serious problems like fainting, dizziness, cardiac arrest, or death. In these rare cases, this occurred when terfenadine was taken:
How do I Store Terfenadine? Terfenadine should be stored in a tightly closed container, in a cool place, out of direct sunlight. It should be kept away from children.
Last reviewed on RxList: 12/8/2004
This monograph has been modified to include the generic and brand name in many instances.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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