Descripción
Fexofenadine – Second-Generation Antihistamine (Non-Drowsy Allergy Relief)
Fexofenadine is a second-generation H1 antihistamine indicated for the symptomatic relief of seasonal allergic rhinitis and chronic idiopathic urticaria (hives). It works by selectively blocking peripheral histamine H1 receptors, reducing symptoms such as sneezing, itching, watery eyes, and nasal congestion.
Unlike first-generation antihistamines, fexofenadine has minimal penetration of the blood–brain barrier, resulting in little to no sedation, making it suitable for daytime use and for individuals who need to remain alert.
Key Details
- Active Ingredient: Fexofenadine hydrochloride
- Drug Class: Second-generation antihistamine (H1 receptor antagonist)
- Indications:
- Seasonal allergic rhinitis (hay fever)
- Chronic idiopathic urticaria (hives)
- Mechanism of Action: Peripheral H1 receptor blockade → reduces histamine effects
- Sedation Profile: Non-drowsy in most patients
- Prescription Status: Over-the-counter or prescription (varies by region)
Especificaciones
- Dosage Forms: Film-coated tablets, oral suspension
- Common Strengths: 30 mg, 60 mg, 120 mg, 180 mg
- Administration: Oral
- Onset of Action: ~1 hour
- Duration of Action: ~24 hours (depending on dose)
- Half-Life: ~14 hours
- Metabolism: Minimal hepatic metabolism
- Excretion: Primarily fecal and renal
- Storage: Room temperature
Dosage & Administration
- Adults and children ≥12 years:
- 120 mg once daily (allergic rhinitis)
- 180 mg once daily (urticaria)
- Children (6–11 years): Typically 30 mg twice daily
- Should be taken with water (not fruit juice) to avoid reduced absorption
- Can be taken with or without food
Compatibility / Suitable Use
- Individuals with seasonal allergies or hay fever
- Patients with chronic urticaria (hives)
- Suitable for daytime use due to minimal sedation
- Appropriate for adults and children (dose-dependent)
Why Choose Fexofenadine?
Fexofenadine is a trusted non-drowsy antihistamine that provides effective, long-lasting relief from allergy symptoms with a low risk of sedation, making it ideal for daily use without impacting alertness.
