Retrovir, also known by its generic name zidovudine or AZT, is an antiretroviral medication used in the treatment and prevention of HIV/AIDS. It belongs to a class of drugs known as nucleoside reverse transcriptase inhibitors (NRTIs), which work by inhibiting the action of reverse transcriptase, an enzyme crucial for the replication of HIV. By doing so, Retrovir helps to decrease the amount of HIV in the body, allowing the immune system to work better and reducing the risk of developing complications related to HIV disease. It can be used alone or in combination with other antiretroviral medications. Retrovir is available in various forms, including tablets, capsules, and syrup, making it accessible for adults and children alike. Despite its effectiveness, it is important to note that Retrovir does not cure HIV/AIDS but is part of a lifelong therapy to manage the virus.