Tenofovir Disoproxil Fumarate in HIV-Infected Patients Who Have Not Had Success With Other Anti-HIV Drug Combinations

The purpose of this study is to make tenofovir disoproxil fumarate (DF) available to HIV-infected patients who have failed other anti-HIV drug combinations, who have few treatment choices available, and whose disease may get worse. This study will allow patients to obtain tenofovir DF before it is approved for marketing.