The time when a baby can take medicine after vaccination cannot be generalized, the exact time is related to the type of vaccine, the type of medicine and the baby’s own condition. Vaccination is vaccination, the baby vaccination mainly includes bacterial vaccine, viral vaccine. After vaccination, babies should avoid eating, drinking and taking medication for half an hour, and should be observed in the observation room to see if there is any discomfort. If there is no abnormality after half an hour, in order to avoid affecting the effect of the vaccine, if the bacterial vaccine, do not take anti-bacterial drugs, such as all kinds of antibiotics within three days; if the viral vaccine, do not take anti-viral drugs within three days. If the baby is taking health care products and other drugs, such as vitamins, calcium tablets, as well as antipyretic and diarrhea medication, etc., the time to take medication is basically not affected by the vaccine. After vaccination, the baby may have discomfort for a short period of time; after taking medication, the side effects of the medication may aggravate the baby’s discomfort. Therefore, unnecessary medications can be suspended, the specific whether it is necessary to use the drug and the time to use the drug, need to follow the doctor’s instructions.