Allegra 120 mg (Fexofenadine)

Description

Allegra 120 mg General Information

Brand Name: Allegra
Generic Name: Fexofenadine
Strength: 120 mg
Form: Tablet

What is Allegra 120 mg?

Allegra 120 mg (Fexofenadine) is an antihistamine used to relieve allergy symptoms such as runny nose, sneezing, itchy or watery eyes, and itching of the nose or throat. It is also used to treat chronic idiopathic urticaria (hives).

How Does It Work?

Fexofenadine is a second-generation antihistamine, meaning it selectively blocks histamine H1 receptors without crossing the blood-brain barrier significantly. This reduces allergic reactions in the body without causing significant drowsiness, a common side effect in first-generation antihistamines.

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Indications

• Seasonal allergic rhinitis (hay fever)
• Chronic idiopathic urticaria (long-term hives with unknown cause)

Allegra 120 mg Dosage and Administration

• Adults and Children (12 years and older): One tablet (120 mg) once daily with water.
• Children (under 12 years): Consult a physician for appropriate dosage and form.

How to Take Allegra 120 mg?

• Swallow the tablet whole with water.
• It can be taken with or without food.
• Avoid taking it with fruit juices (like grapefruit, orange, or apple) as they can decrease the absorption of the drug.

Mechanism of Action

Fexofenadine blocks the H1 receptor, preventing histamine from binding to its receptor sites on cells. This action inhibits the cascade of reactions that cause allergy symptoms such as vasodilation, increased capillary permeability, and smooth muscle contraction.

Onset and Duration

• Onset: Typically within 1 hour
• Duration: 24 hours

What is a Allegra 120 mg Side Effects?

Common Side Effects:

• Headache
• Drowsiness (less common compared to first-generation antihistamines)
• Nausea
• Dizziness

Serious Side Effects (rare):

• Allergic reactions such as rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

Precautions

• Kidney Issues: Dose adjustment may be needed for those with renal impairment.
• Pregnancy and Breastfeeding: Consult your doctor before use.
• Interactions: Can interact with antacids containing aluminum or magnesium. Take these antacids a few hours apart from Fexofenadine.
• Medical Conditions: Inform your doctor if you have any other medical conditions, especially related to kidney or liver function.

Other Pills:  Allegra 30 mg (Fexofenadine) | Alerid 10 mg (Cetirizine) | Alaspan 10mg (Loratadine)

Drug Interactions

• Antacids: Can reduce absorption if taken together.
• Ketoconazole and Erythromycin: Can increase the levels of Fexofenadine in the blood.
• Rifampin: Can decrease the levels of Fexofenadine.
• Fruit Juices: Can reduce the effectiveness of Fexofenadine.

Allegra 120 mg Overdose

If an overdose is suspected, seek emergency medical attention. Symptoms of overdose may include dizziness, dry mouth, or drowsiness.

Storage

• Store Allegra 120 mg at room temperature away from moisture and heat.
• Keep out of reach of children.

Patient Advice

• Do not exceed the recommended dose.
• Inform your doctor if symptoms do not improve or if they worsen.
• Avoid driving or operating heavy machinery if you experience drowsiness or dizziness.
• Maintain hydration, as it helps in reducing the intensity of side effects like dry mouth.