Lupicet L 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 acts as a selective antagonist of peripheral H1 histamine receptors, thereby inhibiting the effects of histamine, a key mediator in allergic reactions. This medication is indicated for the treatment of allergic rhinitis, including seasonal and perennial allergic rhinitis, as well as chronic idiopathic urticaria characterized by itching and hives. By blocking histamine receptors, Lupicet L Tablet effectively reduces symptoms such as sneezing, nasal congestion, rhinorrhea, itching, and ocular irritation. The drug is well-tolerated with a low incidence of sedation compared to first-generation antihistamines, making it suitable for daytime use. It is administered orally, typically once daily, with or without food. Caution is advised in patients with renal impairment, and dosage adjustments may be necessary. Common adverse effects include headache, dry mouth, and fatigue, though these are generally mild and transient. Lupicet L Tablet should be used under medical supervision, particularly in special populations such as pregnant or breastfeeding women. It is contraindicated in patients with known hypersensitivity to Levocetirizine or any of the tablet’s excipients.