I think one of (or both of) the two of you may be a little confused. There is a HUGE difference between PEP (Post Exposure Prophylaxis) and PrEP (Pre-Exposure Prophylaxis). The big difference is:
PrEP: This is what is used as the pre-exposure to HIV medication. The other common drug that is used is Prezista, which is similar to the old 3TC medication. The Prezista is commonly used as a secondary follow up (or morning after pill) to the Truvada before exposure, however is more often used as a PEP
PEP: This is the term used for the treatment that is used post-seroconversion. Among these many drugs include Truvada and Prezista, however this is the category in which you will find all the other HIV medications listed in. They're specifically for post-exposure use. This is very different than the use of Truvada as a pre-exposure prevention.
All this being said, which of the two exactly are we talking about here?
