Lecet 5mg Tablet contains Levocetirizine 5mg, an active antihistamine agent used primarily for the treatment of allergic conditions. Levocetirizine is a selective, third-generation non-sedating H1 receptor antagonist that effectively alleviates symptoms associated with allergic rhinitis, including sneezing, nasal congestion, rhinorrhea, and itchy eyes. It is also indicated for the management of chronic idiopathic urticaria, providing relief from itching and reducing the number and size of hives. The drug works by competitively inhibiting peripheral H1 receptors, thereby preventing the action of histamine, a key mediator in allergic responses. Lecet 5mg is well-absorbed orally, with a rapid onset of action and a duration that supports once-daily dosing. It is generally well tolerated, with minimal sedative effects compared to first-generation antihistamines. Common adverse effects may include headache, dry mouth, and fatigue, though these are typically mild and transient. Lecet 5mg should be used with caution in patients with renal impairment, and dosage adjustments may be necessary. It is contraindicated in individuals with known hypersensitivity to Levocetirizine or any of its excipients. Lecet 5mg Tablet offers an effective therapeutic option for managing allergic symptoms, improving patient comfort and quality of life.