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Olopatadine Hydrochloride Tablets.

Olopatadine is a white or off-white crystalline powder, also known as opatadine hydrochloride; Olopatadine, molecular formula: C21H23NO3, molecular weight: 337.41200, has a wide range of drug effects, such as histamine H1 receptor antagonist effect, chemical mediator inhibition, tachykinin release inhibition and eosinophil infiltration inhibition. It is suitable for allergic rhinitis, urticaria and itching caused by skin diseases.