Mivotilate is primarily used in the field of medicine as an immunomodulatory agent. It is known for its ability to suppress the immune system, making it valuable in the treatment of autoimmune diseases where the immune system mistakenly attacks the body's own tissues. Additionally, it has been explored for its potential use in preventing organ rejection in transplant patients by reducing the immune response against the transplanted organ. Its application is carefully monitored due to its potent effects on the immune system.