It is not recommended to take the vaccine if you have taken cold medicine, and you need to recover from the disease before vaccination. If you have taken cold medicine, it is not recommended that you receive the vaccine immediately. Although there is no authoritative research that can prove that cold medicines can affect the effect of the vaccine, it is impossible to completely exclude the possibility of such events. At the same time, the immunity of the vaccinated person is low during the course of a cold, which is not conducive to the formation of antibodies to the vaccine. It is recommended to wait until the flu has completely recovered before vaccination, at which time the influence of drugs on the vaccine’s action can be completely ruled out, and at the same time the recovery of one’s own immunity will be conducive to the formation of antibodies, so as to achieve the established preventive effect. It is recommended to consult with the medical staff at the vaccination center and follow the doctor’s advice.