Maxstine M 20mg/10mg Tablet is a combination medication containing Bilastine 20mg and Montelukast 10mg, indicated for the management of allergic conditions such as allergic rhinitis and chronic urticaria. Bilastine is a second-generation antihistamine that selectively antagonizes peripheral H1 receptors, providing effective relief from symptoms like sneezing, nasal congestion, itching, and rhinorrhea without causing significant sedation. Montelukast, a leukotriene receptor antagonist, inhibits the action of leukotrienes, inflammatory mediators involved in bronchoconstriction and airway inflammation, thereby improving respiratory symptoms and reducing airway hyperresponsiveness. The synergistic effect of these two agents offers comprehensive control of allergic symptoms by targeting multiple inflammatory pathways. Maxstine M is typically administered once daily, with or without food, as prescribed by a healthcare professional. It is generally well tolerated, with a low incidence of adverse effects; however, patients should be monitored for potential hypersensitivity reactions or neuropsychiatric events associated with Montelukast. This combination therapy is suitable for adults and adolescents aged 12 years and above, providing an effective option for patients inadequately controlled by monotherapy. Use of Maxstine M should be guided by clinical evaluation and consideration of individual patient factors.