The generic name of Chenggong Rexin is Compound Zinc Cloth Granules, which usually needs to be taken at intervals of 4~6 hours, not more than 4 times a day, and the exact time needs to follow the doctor’s instructions. Compound Zinc Cloth Granules is a kind of antipyretic and analgesic, a compound preparation of zinc gluconate, ibuprofen and chlorpheniramine maleate, which is suitable for the common cold or influenza, relieving the symptoms of fever, headache, limb pain, nasal congestion, runny nose, sneezing and so on caused by cold. Generally there is an interval of 4 to 6 hours between two doses to maintain the effective concentration of the drug in the body and to perpetuate the duration of action. However, the drug is an allopathic medication and should not be used for more than 5 days for pain relief and 3 days for antipyretic purposes. If symptoms are not relieved, a doctor should be consulted. The drug may have adverse reactions such as nausea, heartburn, headache, dizziness and tinnitus.