For both deceased- and living-donor transplant, the body recognizes the donor liver as a foreign body.Thus, our immune system will attempt to reject the transplanted liver.Therefore, we will need to use immunosuppressive agents in the rest of our lives.Dosages of these medications are modified by the primary physicians on follow-up examinations at certain intervals.Unless otherwise is expressed, the medications should not be stopped and the dose should not be modified.However, these immunosuppressive agents may make the patient slightly more vulnerable to infections.Therefore, it is important to contact your primary physician even for mild complaints, such as common cold and early-stage diarrhea.