Levos 5 Tablet contains Levocetirizine 5 mg, a third-generation non-sedative antihistamine used primarily for the relief of allergic symptoms. Levocetirizine is the active enantiomer of cetirizine and functions as a selective antagonist of peripheral H1 histamine receptors, thereby inhibiting the effects of histamine released during allergic reactions. It is indicated for the treatment of allergic rhinitis, including seasonal and perennial types, as well as chronic idiopathic urticaria characterized by symptoms such as sneezing, nasal congestion, rhinorrhea, itching, and hives. Levos 5 Tablet offers rapid onset of action and sustained symptom control with minimal sedation compared to first-generation antihistamines. The usual adult dosage is one tablet once daily, which may be adjusted based on clinical response and patient tolerance. It is contraindicated in patients with known hypersensitivity to levocetirizine, cetirizine, or any excipients. Caution is advised in patients with renal impairment, and dose adjustments may be necessary. Common adverse effects include headache, dry mouth, and fatigue, though these are generally mild and transient. Levos 5 Tablet should be used under medical supervision, especially in pediatric and elderly populations, to ensure safe and effective management of allergic conditions.