Is PrEP a vaccine?

PrEP, or pre-exposure prophylaxis, is not a vaccine. It is an antiviral medication that may decrease the risk of getting HIV infection.
PrEP (pre-exposure prophylaxis) is not a vaccine. PrEP medicine isn't injected into the body, and it doesn't work the same way as a vaccine. A vaccine prepares your body to fight off infection for several years. With PrEP, you take a pill every day. The pill that has been shown to be safe and to help block HIV infection is called Truvada. Truvada is a combination of the drugs tenofovir and emtricitabine. If you take PrEP daily, the medicine can often stop HIV from becoming established and spreading in your body. If you do not take PrEP every day, there may not be enough medicine in your bloodstream to block the virus.

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Continue Learning about HIV and AIDS



HIV, the human immunodeficiency virus, slowly destroys the body’s immune system and causes AIDS if not treated. It can be spread through unprotected sex and sexual contact, contaminated blood transfusions, contaminated needles and ...

syringes, and through breastfeeding or transferred at birth from a mother to her child.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.