<prompt> The following are true about enfuviide except:Administered by s.c routeEffective on HIV 1 and HIV 2 strainsBinds to HIV gp41No cross resistance with other anti-retroviral drugs  <response>: Enfuviide It is an Entry fusion inhibitor. MOA: By binding to HIV-1 gp41 Active on HIV 1 not active against HIV-2. Cross resistance not seen with other classes of ARV drugs. Given s.c. twice daily. Used as add on drug for failed regimens. Adverse effects: Pain at injection site and it cause local nodules or cysts. 