Buy Triomune 30 tablets contain a combination of 3 antiretroviral drugs stavudine, lamivudine and nevirapine, which are effective only against RNA viruses (retroviruses) like Human Immunodeficiency Virus (HIV). These three drugs each work by inhibiting the action of the viral-specific enzyme reverse transcriptase (RT) which is needed for the virus to be able to replicate. Retroviruses convert RNA to DNA, which is then integrated into the DNA of infected immune cells so that the virus can replicate.