Immunologic agents are drugs that can modify the immune response, either by enhancing or suppressing the immune system. They are used to fight infections, prevent and treat certain diseases.
Immunologic agents include drugs used for immunosuppression to prevent graft rejection. They can be used as cancer chemotherapy agents. Some immunologic agents can down-regulate the inflammatory process and can be used to treat inflammatory conditions such as rheumatoid arthritis, autoimmune conditions and so on.