What are the uses of Sandimmune Neoral? This medicine helps to treat infections that occur in the eye. It is also used to treat severe asthma in adults Treatment of severe psoriasis for adults from the age of 16 years. Treatment of severe rheumatoid arthritis. This medical drug is also used to prevent rejection of any organ that is transplanted into the human body, such as the liver, heart, kidney, and bone marrow, in combination with corticosteroids.