Allegra

Allegra is a given name of Italian origin, derived from allegria, meaning cheerfulness or joy. It is most common in Italian-speaking communities and has been used in various countries. As a surname and given name it has appeared in literature and contemporary society.

Allegra is also the brand name of fexofenadine, a second-generation antihistamine used to relieve symptoms of allergic rhinitis and chronic urticaria. The medication acts as a selective peripheral H1 receptor antagonist, providing relief from sneezing, runny nose, itchy eyes, and hives with generally less drowsiness than first-generation antihistamines. It is available in 60 mg and 180 mg oral formulations, with dosing differing by condition and patient factors. The drug is typically taken by mouth with water; fruit juice should be avoided for several hours before or after dosing because it can reduce absorption.

Common side effects are usually mild and may include headache or nausea; drowsiness is less common than with older antihistamines. Allegra is available over the counter in many markets and by prescription in others. As with any medication, individuals should consult a healthcare provider about appropriate dosing, potential interactions with other medicines (notably antacids containing aluminum or magnesium that can impair absorption), and considerations related to kidney function, pregnancy, or existing medical conditions.

Beyond the medication, Allegra is used as a personal name and may appear in cultural or literary contexts; there is no single, universally dominant non-medical usage of the term.