Generally if a patient develops a cold after the third vaccination, it is possible to take cold medicine. If a patient develops a cold after the third vaccination, it is possible to take cold medicine. However, it should be noted that patients can usually choose whether or not to take cold medicine based on their physical condition, the extent of their cold, and their doctor’s advice. It is recommended that patients can drink more warm water and soak their feet in hot water as needed. It is also important to note whether the cold symptoms are an adverse reaction to the vaccination. If a similar reaction occurs within half an hour after vaccination, it should be reported to the medical staff in charge of the vaccination and treated promptly.