Which drug is given to cardiac transplant patients in order to prevent the body from attacking the new organ?

To prevent the rejection of transplanted organ or graft the patient is advised to take immuno-suppressant drugs. These immuno-suppressants are necessary to prevent any immune reaction against the graft. Immune cells such as T-cell and B-cells may recognize the graft as foreign and act against the markers on the surface of transplanted organ leading to rejection. To minimize such response of immune system against the graft immuno-suppressants are given. Ex: Corticosteroid - prednisolone.

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depends where it is? i got mine on my arm and from 1-10 it was a 3 different spots react differently