Didanosine is an antiviral medication used to manage a variety of conditions related to HIV. Some common synonyms for didanosine include ddI, Videx, and Dideoxyinosine. Other synonyms for didanosine can include Adesera, Didanosin, and DDI. In most cases, healthcare providers and pharmacists use these terms interchangeably when discussing dosages, side effects, and other treatment-related concerns. In addition to treating HIV infections, didanosine is also effective in managing certain types of cancers and autoimmune disorders. Patients should always consult with a licensed healthcare provider to determine the right dosage and administration schedule for didanosine.