Cyclosporine is a medication used to prevent organ rejection in transplant patients and treat certain autoimmune disorders like psoriasis and rheumatoid arthritis. It is also known by other names such as Ciclosporin, CsA, and Sandimmun. Cyclosporine is an immunosuppressive drug that reduces the activity of the immune system, thereby preventing the body from rejecting a transplanted organ. Other synonyms for Cyclosporine include Neoral, Gengraf, and Restasis. Cyclosporine is a potent drug and should only be used as prescribed by a doctor as it can have serious side effects. To maximize its effectiveness, it is important to take the medication consistently and at the same time each day.