Capex Cz Kid Syrup is used to treat the common cold symptoms such as cough, watery eyes, sneezing, body aches, runny nose, sore throat, and fever in children. It works by blocking the action of histamine, a substance responsible for causing allergic reactions. It helps in shrinking the blood vessels in the nasal passage, thereby reducing a stuffy nose. Also, it works by inhibiting the production of certain chemical messengers in the brain known as prostaglandins responsible for pain and fever. Some children may experience drowsiness, sleepiness, nausea, vomiting, and headache. Before taking this medicine, you should tell your doctor if your child is allergic to any of its components and about all the medications taking and pre-existing medical conditions of child.