Loratadine is a second-generation antihistamine and active pharmaceutical ingredient (API) used in the production of medications for treating allergic conditions. It effectively blocks H1 histamine receptors to relieve symptoms including sneezing, runny nose, itchy or watery eyes, throat or nose itching, and chronic idiopathic urticaria (hives). Unlike first-generation antihistamines, loratadine is non-sedating, making it ideal for formulations intended for daytime use. This high-purity powder (>98% by HPLC) is suitable for pharmaceutical manufacturing and research applications.