Thymoglobuline is a prescription medication primarily used as an immunosuppressive agent in patients undergoing organ transplantation, particularly kidney transplants. It is derived from rabbits that have been immunized with human thymocytes, and it works by targeting and depleting T-cells, which are a key component of the immune system. By reducing the activity of these cells, Thymoglobuline helps prevent the body from rejecting the transplanted organ. It may also be used in the treatment of certain immune-mediated diseases and conditions where reducing the body's immune response is beneficial. Due to its potent immunosuppressive effects, patients receiving Thymoglobuline require careful monitoring for potential side effects, including infections and other complications related to a weakened immune system.