Zyvent LC Tablet is a combination medication containing Levocetirizine 5mg and Montelukast 10mg, primarily indicated for the management of allergic conditions such as allergic rhinitis and chronic urticaria. Levocetirizine is a third-generation non-sedating antihistamine that selectively inhibits peripheral H1 receptors, thereby reducing symptoms like sneezing, rhinorrhea, nasal itching, and ocular irritation. Montelukast is a leukotriene receptor antagonist that blocks cysteinyl leukotriene receptors, diminishing airway inflammation and bronchoconstriction commonly associated with allergic asthma and allergic rhinitis. The synergistic action of these two agents provides comprehensive relief from allergic symptoms by targeting different inflammatory pathways. Zyvent LC is typically prescribed for patients who require both antihistaminic and leukotriene receptor antagonist therapy to achieve optimal symptom control. It is well tolerated, with a low incidence of adverse effects, which may include headache, fatigue, dry mouth, or gastrointestinal discomfort. Caution is advised in patients with hepatic impairment or a history of neuropsychiatric events. Zyvent LC should be used under medical supervision, adhering to recommended dosages to ensure safety and efficacy in managing allergic disorders.