Some studies show antiretroviral medications are linked with erectile dysfunction, but the results are inconsistent and vary from individual to individual.
Erectile dysfunction is not linked with any particular class of antiretrovirals. However, the duration of taking a certain class of antiretrovirals is important.
Some classes of antiretrovirals are associated with erectile dysfunction; especially protease inhibitors (Norvir) are studied to cause ED directly or indirectly.
Apart from the class of antiretroviral medication, the health status and current sexual performance of a person determine the effect of antiretrovirals.