Olopatadine Hydrochloride Tablets are commonly used in the treatment of allergic rhinitis, urticaria, and itchy skin diseases such as unusual psoriasis, exudative erythema multiforme, eczema, etc. It has antihistamine and anti-allergic effects. Some patients taking olopatadine hydrochloride tablets may experience erythema, drowsiness, tiredness, thirst, and adverse reactions such as jaundice, hepatic impairment, and nausea. It should be noted that it is contraindicated for those who have a history of allergy to this product. It should be used with caution in people with low renal function and elderly patients. For people who need to use Olopatadine Hydrochloride Tablets, it is recommended to go to the regular hospital to consult the doctor and learn about the relevant matters, and use the medication under the guidance of the doctor, do not use the medication without authorization to prevent abnormalities.