Zenibast 10 Tablet contains Ebastine 10 mg, a second-generation antihistamine used primarily for the treatment of allergic conditions such as allergic rhinitis and chronic idiopathic urticaria. Ebastine selectively antagonizes peripheral H1 histamine receptors, thereby inhibiting the effects of histamine, a key mediator in allergic reactions. This action helps alleviate symptoms including sneezing, nasal congestion, rhinorrhea, itching, and hives, improving patient comfort and quality of life. Zenibast 10 is characterized by its minimal sedative effects compared to first-generation antihistamines, making it suitable for patients requiring daytime symptom control without significant drowsiness. The tablet is administered orally, typically once daily, ensuring convenient dosing and enhanced compliance. It is metabolized in the liver primarily via the cytochrome P450 system, producing an active metabolite responsible for its therapeutic effects. Caution is advised in patients with hepatic impairment, and it should be used under medical supervision in such cases. Zenibast 10 is contraindicated in individuals with known hypersensitivity to Ebastine or any tablet excipients. Common adverse effects may include headache, dry mouth, and gastrointestinal disturbances, though these are generally mild and transient. Overall, Zenibast 10 Tablet offers an effective and well-tolerated option for managing allergic symptoms.