Ebastine is a second-generation antihistamine compound used as an active pharmaceutical ingredient (API) in the treatment of allergic conditions. It effectively manages symptoms of allergic rhinitis, including sneezing, runny nose, and itchy eyes, as well as chronic idiopathic urticaria, such as hives and skin itching. Ebastine functions by selectively blocking H1 histamine receptors, thereby inhibiting the allergic response. Valued for its non-sedating profile, it is ideal for daytime use without inducing drowsiness. As a high-purity chemical (typically ≥97.5%), it is supplied as a white to yellow crystalline powder for pharmaceutical manufacturing and research applications, and is formulated into oral dosage forms like tablets or syrups.