Levosiz 5mg Tablet MD contains Levocetirizine 5mg, a third-generation non-sedative antihistamine used primarily for the treatment of allergic conditions. Levocetirizine is the active enantiomer of cetirizine and exhibits selective inhibition of peripheral H1 receptors, effectively reducing symptoms associated with allergic rhinitis, chronic idiopathic urticaria, and other histamine-mediated allergic disorders. The medication provides rapid relief from nasal congestion, sneezing, rhinorrhea, and pruritus, improving patient quality of life. Levosiz is well-tolerated, with a low incidence of sedation and anticholinergic side effects compared to first-generation antihistamines. It is indicated for use in adults and children over six years of age. The recommended dosage is one tablet daily, with adjustments made based on clinical response and patient tolerance. Caution should be exercised in patients with renal impairment, and dose modification may be necessary. Levosiz should be used under medical supervision, especially in pregnant or lactating women. Common adverse effects include headache, dry mouth, and fatigue, though these are generally mild and transient. Overall, Levosiz 5mg Tablet MD offers an effective and safe option for managing allergic symptoms with improved patient compliance due to its once-daily dosing regimen.