List of products in the National Drug Code with proprietary name . Basiliximab is used to prevent organ rejection in people who have received a kidney transplant. It is usually taken along with other medications (e.g., cyclosporine, corticosteroids) to allow your new organ to function normally. Basiliximab is an immunosuppressant drug known as a monoclonal antibody. It works by slowing down your body's defense system (immune system) to prevent your body from rejecting the new kidney after surgery (acute rejection).