Developing a resistance to HIV drugs

Resistance to HIV drug therapy

Unfortunately, many people treated with antiretroviral drugs develop resistance to therapy. Their levels of virus (viral loads) increase despite continuing treatment. When this happens, doctors often switch or add different antiretroviral drugs. One new type of antiretroviral drug that is available is tenofovir DF. In HIV infected patients with suboptimal viral suppression from nucleoside antiretroviral therapy, adding tenofovir DF to ongoing therapy reduces viral loads.