After babies take fever-reducing medication, there is a process of absorption, which takes about an hour to take effect. Different antipyretic drugs are absorbed for different lengths of time, and the time to take effect may vary. After taking antipyretic drugs, the heat in the body needs to be emitted through the body surface, generally about twenty minutes after taking the medicine will begin to sweat, with the discharge of sweat, the body heat will also begin to decline, and the body temperature can basically return to normal after one hour. After taking the medicine, if there is no sweating, you can take a bath with a hot towel to help promote the drug to work as soon as possible. In addition, you should also drink more warm water, which can reduce the side effects of the medication while promoting body sweating. The choice of antipyretic drugs should not be based on the time of action of the drug. Some drugs are fast acting but are not good for the baby’s body and are not recommended to be used easily. In comparison, hormonal antipyretic drugs are quicker to work, but they have a lot of side effects and are not suitable for babies.