 The drug used in PREPIT-WA is called generic TDFFTC made by Mylan Laboratories Ltd.. The generic TDFFTC is a single tablet made up of two HIV medications: tenofovir disoproxil fumarate and emtricitabine a combination known as TDFFTC. TDF and FTC have been widely used for many years to treat HIV. When used with other medicines in people who already have HIV, TDFFTC reduces the amount of HIV virus in the blood. TDFFTC does not cure HIV or AIDS, and it is not an HIV vaccine. 