Fexofenadine belongs to the class of medications called second generation antihistamines, specifically the class known as histamine receptor antagonists. It works by blocking the action of one of the body's natural chemicals known as histamine.
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For the treatment of seasonal allergies, the recommended dose of fexofenadine for adults and children 12 years of age and older is 60 mg every 12 hours or 120 mg once daily. To treat year-round allergies or allergic skin reactions, the recommended dose is 60 mg taken by mouth every 12 hours.
For people with Kidney Disease, the usual starting dose is 60 mg taken by mouth once daily.
Fexofenadine may be taken with or without food. It should not be taken with fruit juice, if possible. Avoid prolonged use of Allegra 24 Hours, unless recommended by a doctor.
Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.
It is important to take Allegra 24 Hours exactly as prescribed by your doctor. If you miss a dose, take it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue on with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.
Store Allegra 24 Hours at room temperature, protect it from light and moisture, and keep it out of the reach of children.
Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.
Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.
The side effects listed below are not experienced by everyone who takes Allegra 24 Hours. If you are concerned about side effects, discuss the risks and benefits of Allegra 24 Hours with your doctor.
The following side effects have been reported by at least 1% of people taking Allegra 24 Hours. Many of these side effects can be managed, and some may go away on their own over time.
Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.
Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.
Check with your doctor as soon as possible if any of the following side effects occur:
Stop taking the medication and seek immediate medical attention if any of the following occur:
Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking Allegra 24 Hours.
Allegra® 12 Hour 60 mg tablet
Each peach, oval, double convex tablet, engraved on one side with an "e" and with "06" on the other side, contains 60 mg of fexofenadine. Nonmedicinal ingredients: croscarmellose sodium, hydroxypropyl methylcellulose, iron oxide, magnesium stearate, microcrystalline cellulose, polyethylene glycol, povidone, silicon dioxide, starch, and titanium dioxide. These tablets do not contain lactose.
Allegra® 24 Hour 120 mg tablet
Each peach, oblong, double convex tablet, plain on one side and engraved on the other side with "012", contains 120 mg of fexofenadine. Nonmedicinal ingredients: croscarmellose sodium, hydroxypropyl methylcellulose, iron oxide, magnesium stearate, microcrystalline cellulose, polyethylene glycol, povidone, silicon dioxide, starch, and titanium dioxide. These tablets do not contain lactose.
Do not take Allegra 24 Hours if you are:
There may be an interaction between fexofenadine and any of the following:
If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:
An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.
Medications other than those listed above may interact with Allegra 24 Hours. Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications that you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the Nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.
Before you begin taking a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should take Allegra 24 Hours.
Drowsiness: Fexofenadine usually causes minimal drowsiness when used as directed by your doctor or pharmacist. Studies have shown that fexofenadine does not cause drowsiness under normal circumstances. People taking higher-than-recommended doses of fexofenadine may experience drowsiness. Do not drive or operate machinery if you become drowsy while taking Allegra 24 Hours.
Reduced kidney function: If you have reduced kidney function, discuss with your doctor how Allegra 24 Hours may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Allegra 24 Hours, and whether any special monitoring is needed.
Pregnancy: Allegra 24 Hours should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking Allegra 24 Hours, contact your doctor immediately.
Breast-feeding: Allegra 24 Hours passes into breast milk. If you are a breast-feeding mother and are taking fexofenadine, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.
Children: The safety and effectiveness of using Allegra 24 Hours have not been established for children younger than 12 years of age.
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