Lisani 5mg Tablet contains Levocetirizine 5mg, a third-generation non-sedative antihistamine primarily used for the treatment of allergic conditions. Levocetirizine is the active enantiomer of cetirizine and exhibits selective peripheral H1 receptor antagonism, effectively inhibiting the effects of histamine, a key mediator in allergic reactions. This medication is indicated for the relief of symptoms associated with allergic rhinitis, including sneezing, nasal congestion, runny nose, and itchy or watery eyes. Additionally, it is effective in managing chronic idiopathic urticaria, providing symptomatic relief from itching and hives. Lisani 5mg Tablet offers rapid onset of action and a prolonged duration, allowing once-daily dosing which enhances patient compliance. The drug is well-tolerated with minimal sedative effects due to its limited penetration of the blood-brain barrier. It is contraindicated in patients with known hypersensitivity to Levocetirizine or any component of the formulation, and caution is advised in patients with renal impairment. Common adverse effects may include headache, dry mouth, and fatigue. As with all medications, it should be used under medical supervision, especially in pregnant or breastfeeding women. Lisani 5mg Tablet provides effective and convenient management of allergic conditions, improving patient quality of life.