Tefovir combined with emtricitabine truvada r was licensed to be used in conjunction with other hiv prevention methods by hiv negative people at high risk of hiv acquisition this vel method of hiv prevention is termed hiv pre exposure prophylaxis prep whilst the use of prep has been implemented in some countries this is still a new method and several countries are to still implement prep the use of prep will go a long way in globally controlling the ever surging rise of the aids . Pre exposure prophylaxis or prep is a way for people who do not have hiv but who are at very high risk of getting hiv to prevent hiv infection by taking a pill every day the pill brand name truvada contains two medicines tenofovir and emtricitabine that are used in combination with other medicines to treat hiv. Pre exposure prophylaxis or prep is a way for people who do not have hiv but who are at very high risk of getting hiv to prevent hiv infection by taking a pill every day the pill truvadar contains two medicines tenofovir and emtricitabine that are used in combination with other medicines to treat hiv when someone is exposed to hiv through sex or injection drug use these medicines can . Details aboutpre exposure prophylaxis for hiv prevention truvada a pill for hiv prevention pre exposure prophylaxis for hiv prevention truvada a pill for hiv prevention primary hiv clinical care for adults children and pregnant women a practi gbp2298. See more pre exposure prophylaxis for hiv prevention by email to friends share on facebook opens in a new window or tab share on twitter opens in a new window or tab share on pinterest opens in a new window or tab add to watchlist