Usually children can have their fever reduced in half an hour to an hour after drinking Merlin, because Merlin is a non-steroidal anti-inflammatory drug that can have a good antipyretic and analgesic effect. After children take Merlin, it will make the child’s body temperature set point move down, causing the child’s whole body to sweat, and then the body temperature will gradually drop. After giving Merlin to children, drink warm water in time, after replenishing sufficient water, the effect of Merlin will be more fully played. Between half an hour and an hour after the child has taken Merlin, parents should promptly observe whether the child is sweating and take the body temperature.