How well does PrEP work?
When taken as directed, Truvada gives nearly perfect protection against HIV.
When taken as directed, Truvada gives nearly perfect protection against HIV.
Click the links below for detailed answers to questions people ask about how well PrEP works.
- How effective is PrEP at preventing HIV?
- How effective is PrEP compared to condoms?
- If I use PrEP, do I have to use condoms?
- How soon after starting PrEP will I be protected? How long do I have to keep taking it to maintain that protection?
- Does taking PrEP mean I can’t get HIV?
- Has anyone ever contracted HIV despite taking PrEP as directed?
- When people say PrEP is 99% effective, what does that mean? Do I still have a 1% chance of contracting HIV?
- Does PrEP protect against both HIV-1 and HIV-2?
- What about Truvada-resistant strains of HIV?
- Can I be an "HIV carrier" while I am HIV-negative?
- What about the Truvada lawsuit ads I'm seeing all over?