Children with fever often need to use antipyretic drugs, commonly used drugs such as Tylenol, Benadryl (acetaminophen), Merlin, Chen Gong Rezin (ibuprofen). When using the following items: 1, children’s viral colds and fevers tend to recur, so after using antipyretic drugs, the body temperature may rise after a period of decline. If the child is in good spirits after the fever subsides and plays as usual, it is a good performance. If the child is in poor spirits again after the fever has subsided, simply give the antipyretic medicine again. If the mental state is still bad after the fever subsides, you need to see a doctor again. Most fever-reducing medications are OTC (over the counter, i.e., available on the shelf for anyone to buy without a doctor’s prescription), so the recommended dose on the drug’s instructions is actually very small (because of the weight difference between children of different ages and to prevent overdose by children or parents who do not know about the medication) and often does not reduce fever effectively. However, when you take your child to the doctor, he or she will give you a prescribed dose. This is precisely calculated based on your child’s actual weight and is usually effective in reducing fever. Therefore, after your visit to the doctor, please take the medication as prescribed by the doctor. 3. Children with an axillary temperature greater than 38.5 degrees can take fever-reducing medication. However, it is necessary to drink enough water containing minerals (such as oral rehydration salts) for the body temperature to drop, otherwise it is not effective. 4. Do not take the same medicine repeatedly within a short period of time, it is easy to poisoning phenomenon. If it is necessary to use should be replaced by different antipyretic drugs alternately to reduce the chance of poisoning. 5, some cases, the body temperature is not high or normal, but also can take this type of drugs, of course, also need to drink enough water containing minerals. Doctors are using this type of drug for anti-inflammatory or analgesic purposes. 6, these drugs are less likely to have allergic reactions, but individual children still have allergies, as informed to the doctor during the visit. Children with asthma, G-6-PD, hepatitis, coagulation disorders, and cardiovascular diseases should not use this class of drugs easily.