Bilastine is an antihistamine used to treat allergic conditions such as hay fever, seasonal allergies, and chronic urticaria (hives). It works by blocking histamine receptors, preventing the effects of histamine, a substance in the body that causes allergy symptoms like itching, sneezing, and runny nose. Bilastine is non-sedating, meaning it typically does not cause drowsiness, making it suitable for children and adults. It is available in different dosages, with the 10 mg formulation commonly used for children, usually once a day. It helps to relieve allergy symptoms without significant sedative effects, allowing children to continue their daily activities without much disruption.