Reatix Kit is used to treat HIV infection. It contains Tenofovir disoproxil fumarate, Emtricitabine, Atazanavir, and Ritonavir. Together, these medications decrease the amount of HIV in the blood and increase the number of immune cells that help fight infections in the body. Thus, Reatix Kit helps treat HIV infection. In some cases, this medication may cause headache, nausea, vomiting, diarrhoea, and stomach pain. Most of these side effects may not require medical attention and resolve gradually over time.