You can’t have a medical checkup after taking cold medicine. Although the clinical symptoms improve after taking cold medicine, if you have a medical checkup at this time, the indicators in the blood of the body have not fully recovered to the normal state, and the results of the medical checkup will be abnormal, thus affecting the judgment of the results of the medical checkup. It is recommended to have a health checkup one week after the clinical symptoms have significantly improved and the medication has been stopped. Meanwhile, try to eat less greasy, high-fat food three days before the physical examination. The night before the physical examination should pay attention to rest, do not drink water after 8:00 p.m. the night before the physical examination, in order to make the results of the physical examination close to normal, the influence of factors to the minimum.