Chronic urticaria taking prednisolone tablets, there is not a specific time, but need to be analyzed according to the severity of the disease as well as the efficacy of the treatment, followed by the principle of the stabilization of the disease must be gradually reduced. Prednisolone tablets are mainly composed of prednisolone, which is a kind of adrenocorticotropic hormone drugs, the drug has a strong anti-inflammatory, anti-allergic and immune suppression effect. Prednisolone tablets for the treatment of chronic eczema, the specific time to take, need to be based on the severity of the disease and the therapeutic effect of the drug to decide, usually in the case of continuous use of 2 to 4 weeks, you need to gradually reduce the use. Adverse effects of prednisolone tablets include facial swelling, acne, hypokalemia, nausea, vomiting and osteoporosis. Prednisolone tablets are contraindicated in people who are allergic to the components of the drug, patients with severe psychiatric disorders, patients with active peptic ulcers and so on. In order to ensure the safety and effectiveness of the medication, it is important to use the medication in strict accordance with the doctor’s instructions.