(Isoprinosine or Methisoprinol) is a combinatinon of inosine, acetamidobenzoic acid, and dimethylaminoisopropanol used as an antiviral drug. Inosine pranobex has no effect on viral cells itself. It acts as a powerful immunostimulant. It is most commonly used to treat the rare measles complication subacute sclerosing panencephalitis in conjunction with intrathecal interferon therapy, with promising results.