Campath is a colorless, sterile, isotonic and clear solution for injection, with no added preservatives. It is a treatment for a certain leukemia type that stops the growth of cancer cells. Monoclonal antibody Campath can only be prescribed via the program of Lemtrada Risk Evaluation and Mitigation Strategies. Taking Campath may increase risk of cancer in the thyroid, lymphoma, and skin. The medication may even result in fatal issues in the autoimmune system.