Biochem/physiol Actions Antiviral acyclic nucleoside phosphonate (ANP) analog. Adefovir is an antiviral acyclic nucleoside phosphonate (ANP) analog.that works by blocking reverse transcriptase 3. It is an inhibitor of duck hepatitis B virus (DHBV) replication that inhibits covalently closed circular DNA (CCC DNA) amplification 4. Cytotxicity is induced by Human Renal Organic Anion Transporter 1 (hOAT1) 5. Adefovir is an Inhibitor of edema factor (EF)-induced cAMP accumulation and changes in cytokine production in mouse primary macrophages 2. Application Adefovir is used to treat hepatitis B infections. It is used to study organ-specific toxicity and immune mechanisms of Adefovir treatment 1,2.