From around 2010 to 2013 I was on a drug called Rituximab to control my autoimmune conditions (rheumatoid arthritis and vasculitis). This highly effective medication targets b-cells and destroys autoimmune responses by disabling parts of the immune system. After a few years of treatment, though, my immunoglobulin levels were extremely low and it was decided that Rituximab was no longer safe for me. I was moved to tocilizumab.