The side effects of Epinastine Hydrochloride Capsules are allergy, psychoneurological, digestive and respiratory. The specifics are as follows: 1.Allergy: patients sometimes experience hives, itching and pruritic erythema when taking the medicine. 2. Psychoneurological system: patients sometimes have adverse reactions such as drowsiness, tiredness, headache. 3. Digestive system: a few patients may have gastrointestinal disorders or dyspeptic symptoms. 4. Respiratory system: a few patients may experience dyspnea, difficulty in coughing up sputum, nasal congestion and so on. Patients should stop taking the drug and consult a doctor if any adverse reaction occurs during the period of taking the drug. This product is a histamine H1 receptor antagonist, applicable to adults suffering from allergic rhinitis, urticaria, eczema, dermatitis, pruritus, itchy rash, psoriasis with itching and allergic bronchial asthma prevention and treatment. It is contraindicated in case of hypersensitivity to any of the components of the product. The drug is not recommended for women who are breastfeeding. The drug is a prescription drug and should be used in strict accordance with the doctor’s instructions.