olopatadine hydrochloride and its Impurities

Olopatadine hydrochloride is an antihistamine drug used in the form of eye drops and nasal drops to treatallergic symptoms like inflammation, itching, watering, and burning. It is also an anticholinergic and mast cell stabilizer.Reference standards of Olopatadine Hydrochloride API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.