Suramin is a 100-year-old drug developed to treat African sleeping sickness and river blindness. Though it has been investigated for other diseases, including cancer, it is not approved for any therapeutic use in the United States.
However, a small, randomized clinical trial conducted by Robert Naviaux, MD, PhD , professor of medicine, pediatrics and pathology, and colleagues at University of California San Diego School of Medicine have found that a single intravenous dose of suramin produced dramatic, but transient, improvement of core symptoms of autism spectrum disorder (ASD). Currently, there are no drugs approved for treating the core symptoms of ASD. https://health.ucsd.edu/news/topics/suramin-autism/pages/default.aspx