New site answers your questions: “What is PrEP?”


PrEP means Pre-Exposure Prophylaxis, and it’s the use of anti-HIV medication that keeps HIV negative people from becoming infected. PrEP is approved by the FDA and has been shown to be safe and effective. A single pill taken once daily, it is highly effective against HIV when taken every day. The medication interferes with HIV’s ability to copy itself in your body after you’ve been exposed. This prevents it from establishing an infection and making you sick.

Even though PrEP has been around in the U.S. for over a year, not a lot of people know about it. And, even fewer people feel like they know enough about it to be able to make an informed decision about whether or not to use it. For those who do use it, the information they have might be more focused on practical issues, like where to get it, rather than on what PrEP does in the body to prevent HIV infection.

By using animation to show PrEP in the body and why “once a day” is recommended, people can see what PrEP does and people who currently use PrEP can create an image of what happens when they take a PrEP pill every day.

View the video below to get information about PrEP and see an illustration of how it can work inside the body to prevent HIV infection.

Learn More About PrEP

See CDC 2014 Clinical Practice Guidelines at – PrEP information page (

AIDSinfoNet – Reliable, Up-To-Date Treatment Information(

AVAC – Global Advocacy for HIV Prevention (

Avert – AVERTing HIV and AIDS (

CDC – Questions and Answers from the U.S Centers for Disease Control and Prevention (

My PrEP Experience – Real stories from real people who adopted PrEP for prevention in the US (

PrEP Facts – San Francisco AIDS Foundation PrEP information in visual format for MSM and heterosexual individuals, with an option for Spanish(

PrEP Watch – Interactive webpage with information and resources on gaining access to PrEP (

PrEParing for HIV – An Epidemic Interventions Initiative by the University of California

Project Inform – Videos, publications and resources (

SFHIV – City and County of San Francisco Department of Public Health’s PrEP information page (

Guidance for Use of PrEP in Practice and Research Settings

WHO – World Health Organization (

CDC – Downloadable PDF from the Centers for Disease Control and Prevention (

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