Bilastin M Tablet is a combination of two medicines: bilastine and montelukast. Bilastine is an antiallergic medication. It treats allergy symptoms such as itching, swelling, and rashes by blocking the effects of a chemical messenger (histamine) in the body. Montelukast works by blocking the action of leukotriene, a chemical messenger. Bilastine is a prescription drug that relieves allergic symptoms like runny nose, sneezing, itching, and rash. It works by blocking histamine action in the body and is available as tablets, orodispersible tablets, and syrup. It is a second-generation antihistamine and takes effect by selectively inhibiting the histamine H 1 receptor, preventing these allergic reactions. [7] . Bilastine has an effectiveness similar to cetirizine, fexofenadine, and desloratadine. [8] Bilastine is a new second generation H1- antihistamine recently approved for the symptomatic treatment of allergic rhinitis (AR) and chronic urticaria (CU). Bilastine epitomizes the evolution of research on antihistamines concerning both efficacy and ...