PrEP Facts
The first online source for information about how to prevent HIV with PrEP.
In 2012, PrEPFacts.org became the first informational PrEP resource online. The creation of the site and accompanying informational materials was a collaboration of San Francisco AIDS Foundation, San Francisco Department of Public Health, Project Inform, Be The Generation, Gilead Sciences and other local health agencies, community-based providers, and PrEP advocates.
PrEP, which stands for pre-exposure prophylaxis, is an effective way to prevent HIV that involves taking medication either daily or around the times you have sex. If you’re new to PrEP or want to learn more about who it’s for, how to access it, the research supporting it and how effective it is, check out PrEPFacts.org to learn more.
PrEPfacts.org answers your questions about research, best practices for staying healthy, where to get a prescription and more. Visit PrEPfacts.org to learn more.
We’ve also made PrEPfacts.org campaign materials available for download in the virtual asset library. Providers all over the country have used these materials in their own clinics to share education about the effectiveness of PrEP.
PrEP Resources
Lenacapavir Looks Promising for Once-Yearly PrEP
New research presented at CROI 2025 paves the way for Gilead Sciences to pursue Phase 3 testing of a highly-anticipated once-yearly formulation of long-acting injectable PrEP.
Twice-yearly injectable PrEP is highly effective for gay men and trans individuals
Twice-yearly lenacapavir reduced the risk of HIV acquisition by 96% among gay and bisexual men and transgender and nonbinary people.
Digging into the science–and promise–of long-acting injectable PrEP
From lenacapavir offering 100% protection against HIV among cis women, to the potential for long-acting PrEP to end the HIV epidemic, Liz Highleyman offers a thorough overview of the current state of injectable PrEP.
Your burning questions about HIV… answered!
We get all kinds of questions from community members about HIV and AIDS. We answer them all, and provide our community with the resources and information we need to make the best choices for ourselves and our health.
Free health insurance program for Magnet PrEP Care clients
In partnership with American Exchange, San Francisco AIDS Foundation will now pay the health...
Free drop-in health services for youth age 24 or under
Drop-in health services are available for persons 18-24 every Thu from 3 to 6pm Make...
What’s new in HIV: Updates on long-acting injections for prevention & treatment
New research is showing how PrEP and treatment injections may transform our response to the HIV epidemic.
What You Need To Know About Injectable PrEP (Apretude)
Apretude (CAB-PrEP) is a new option for HIV prevention. Here's info on how it works, what's involved in taking it, how effective it is, and more.
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