Histakind-M Tablet is a combination medication containing Montelukast 10 mg and Fexofenadine 120 mg, indicated for the management of allergic conditions such as allergic rhinitis and chronic urticaria. Montelukast, a leukotriene receptor antagonist, works by blocking leukotriene D4 receptors in the respiratory tract, thereby reducing inflammation, bronchoconstriction, and mucus production. Fexofenadine, a second-generation antihistamine, selectively inhibits peripheral H1 receptors, alleviating symptoms such as sneezing, nasal congestion, itching, and hives without causing significant sedation. This synergistic combination provides comprehensive relief from allergic symptoms by targeting multiple pathways involved in the allergic response. Histakind-M is typically administered once daily, with or without food, as prescribed by a healthcare professional. It is generally well-tolerated; however, patients should be monitored for potential adverse effects including headache, dizziness, gastrointestinal disturbances, and hypersensitivity reactions. Caution is advised in patients with hepatic or renal impairment, and it is contraindicated in individuals with known hypersensitivity to either component. Histakind-M Tablet should be used under medical supervision, especially in pediatric and elderly populations, to ensure optimal therapeutic outcomes and minimize risks.