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Alzero contains LevoCetrizine as the active ingredient which is a Histamine H1-receptor antagonist. Levocetirizine, the active enantiomer of Cetirizine, is an antihistamine that works by selectively competing with histamine for H receptor sites on effector cells in the gastrointestinal tract, blood vessels and respiratory tract.
Seasonal Allergic Rhinitis/Chronic Urticaria,Hay fever
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Common Side Effects of Alzero are Sleepiness, Fatigue, Headache, Dryness in mouth.