Olopatadine Hydrochloride Tablets can be taken on an empty stomach, and there is no sufficient evidence that Olopatadine strongly stimulates and damages the gastric mucosa. Please standardize the medication under the guidance of a doctor. The indications of Olopatadine Hydrochloride Tablets are allergic rhinitis, urticaria, eczema, itching, etc. Pregnant women and lactating women should avoid using this drug, and the dose should be reduced when used by the elderly and children. Oral capsules and tablets are usually taken once at breakfast and once at night before bedtime. The main adverse reaction to olopatadine hydrochloride tablets is drowsiness, and concentrated activities such as driving a car or maneuvering machinery should be avoided while using the drug. Other less common serious adverse reactions are fulminant hepatitis, hepatic impairment, and jaundice. The drug should not be taken by people with liver or kidney impairment. The drug needs to be used under the guidance of a professional physician, and should not be used arbitrarily on its own.