Imunovir, also known as Isoprinosine has been recommended as an adjuvant treatment for cancer, age-associated immune impairments and AIDS. There have been more than 60 articles published on Isoprinosine and cancer since 1972. Imunovir is an immunostimulator, which besides its immunomodulatory effect also has antiviral properties. It is used in the treatment of acute and chronic viral infections. Imunovir acts on the immune system to restore impaired cell-mediated immune response to its baseline level, in addition to enhancing humoral immune response. The drug also has a direct antiviral activity. Imunovir can reduce the intensity of symptoms and shorten the duration of the viral infection. In addition, the occurrence of complications is reduced and the frequency and severity of recurrences is minimised. Imunovir has been found to have an immunoenhancing effect in old persons. Imunovir also available in SYRUP form. Imunovir can also be administered for immunorestoration after chemotherapy, surgery or radiation.