There is no cure for HIV, but zidovudine, lamivudine and abacavir are three of a number of medicines that lower the amount of virus in the body (viral load) and therefore slow down the progression of the disease from HIV to AIDS. A combination of several anti-HIV medicines is required to fight the infection because the virus can become resistant to one agent very quickly. Zidovudine, lamivudine and abacavir are used together to prevent resistance occurring. This combination preparation reduces the number of tablets to be taken and therefore simplifies treatment. It is recommended that individuals are stabilised on the medicines separately for six to eight weeks before being transferred to this combination product.