PrEP for Women
Last updated: July 16, 2025
Together, we can change the course of the HIV epidemic…one woman at a time. #onewomanatatime #thewellproject
PrEP stands for
Prophylaxis: Taking medicine before being exposed to something, to prevent yourself from getting a disease or condition
What Is PrEP?
We use several kinds of medicine this way:
• Taking anti-malaria medication when we travel to areas where we might be bitten by mosquitoes that carry malaria
– When medicine is in a person's body before getting a mosquito bite, they are much less likely to get sick from malaria when bitten
• For women, taking contraceptive (birth control) pills
– Chances of pregnancy greatly reduced when contraceptives are already in a woman's body when exposed to semen during sex
• PrEP: People who are not living with HIV take an HIV drug to reduce their risk of acquiring HIV if they are exposed to HIV
• Oral (by mouth) PrEP and long-acting injectable PrEP
How Does PrEP Prevent HIV Transmission?
• CD4 cells infected with HIV become little factories that make thousands of new copies of this virus each day – HIV drugs work by blocking HIV from making copies of itself
• If an HIV-negative woman already has HIV drugs in her bloodstream when she is exposed to HIV, e.g., during sex without condoms: – Medicine can keep HIV from making copies of itself
– Prevents her from acquiring HIV
Daily Oral PrEP
July 2012: U.S. Food and Drug Administration (FDA) approved daily Truvada (tenofovir disoproxil fumarate + emtricitabine, TDF/FTC) as PrEP for sexually active adults vulnerable to acquiring HIV
• Truvada also used as part of combination HIV drug treatment
• FDA has since approved Descovy (tenofovir alafenamide plus emtricitabine, TAF/FTC) for PrEP in people assigned male at birth
July 2021: WHO updated guidelines recommend:
• Daily oral PrEP for anyone highly vulnerable to acquiring HIV
• Non-daily oral PrEP for men who have sex with men
• Dapivirine vaginal ring for women
• Each country must approve any drug separately www.thewellproject.org
Long-Acting Injectable PrEP
December 2021: FDA approved long-acting injectable form of the integrase inhibitor cabotegravir for PrEP
• Some people don’t want to/cannot take a daily pill
• Apretude (US name): 2 monthly shots, then 1x every 2 months
• Can also be taken daily by mouth before starting injections –ensure no bad reactions to the drug
• Concerns about extremely high cost, especially in countries with high HIV rates
• Drug stays at low levels in body long after stopping injections
– Studies: especially true in women
– Higher risk of drug resistance if HIV acquired after stopping or missing injections
Long-Acting Injectable PrEP
June 2025: FDA approved twice-yearly injectable form of the capsid inhibitor lenacapavir for PrEP
• Research found the drug so highly effective at preventing HIV acquisition that studies were stopped early
• Yeztugo (US name): 1 shot along with 2 days of tablets, then 1x every 6 months (26 weeks, +/- 2 weeks only)
• Concerns about extremely high cost, particularly in a time of devastating global health funding cuts
Has
PrEP Been Shown to Be Effective?
• Efficacy shown
• Oral PrEP when taken daily as prescribed
– More than 90% effective against sexual transmission
– More than 70% effective against transmission from sharing injection drug equipment
• Not effective among women in southern African studies, but drug wasn’t taken as prescribed
• Highly effective as “bridge” for serodifferent couples until partner living with HIV has undetectable viral load
– U=U: cannot transmit HIV sexually if undetectable viral load and on treatment
Why Are Some Research Findings Unclear?
For HIV prevention tools (condoms, PrEP, etc.) to work, they have to be used – correctly and consistently
• Studies that showed benefit had much higher rates of adherence
• Reasons for non-adherence, especially among women, not fully understood
• Need for women to participate in studies to understand adherence issues
CDC Guidelines for PrEP Use
December 2021: Updated CDC guidelines encourage providers to inform all people who are having sex that PrEP can protect them from acquiring HIV, offer PrEP to anyone who asks for it
• Desired effect of reducing stigma and increasing awareness of PrEP
• PrEP has reached only a small fraction of people in the US who might need it
– CDC has estimated that only 10 percent of women who could benefit from PrEP were prescribed the drug
WHO Guidelines
WHO recommendations are similar to past CDC guidelines, which recommended that PrEP be considered for HIV-negative people who are at “substantial risk” for acquiring HIV. This includes people who:
– Are in a sexual relationship with a partner living with HIV
– Don’t regularly use condoms/don’t know HIV status of sexual partner(s)
– Have high number of sexual partners
– Are engaged in commercial sex work
– Have had recent bacterial sexually transmitted disease
– Use injections drugs and
• Share drug equipment, or
• Have an injecting partner who is living with HIV
When PrEP Is NOT Recommended
• Some reasons PrEP is not recommended; having
– Unknown HIV status (it’s important that only people who test negative for HIV take PrEP)
– Signs or symptoms of acute HIV infection
– Decreased kidney function
– Unknown hepatitis B status and/or vaccination status
• PrEP should be considered for people in areas or personal networks where HIV is more common
– CDC offers:
• Tools, checklists and counseling for providers
• Information sheets for patients (English, Spanish) www.thewellproject.org
CDC Recommendations
• PrEP must be taken daily to be highly effective
• PrEP is designed to be used with other HIV prevention strategies
• Everyone prescribed PrEP must have negative HIV test
– CDC recommends people on PrEP be tested every 3 months to make sure they remain HIV-negative
• Pregnant people should talk to their provider about PrEP
– Especially if in serodifferent relationship
– Oral PrEP drugs are safe in early pregnancy
– PrEP can protect HIV-negative partner when trying to get pregnant
Concerns about PrEP
• HIV-negative people may not adhere; PrEP won’t be effective
• Doesn’t prevent other STIs
• Potential for developing drug resistance if HIV acquired after inconsistent PrEP use
The PrEP Debate
Advantages of PrEP
• PrEP can be taken without agreement or knowledge of one's sex partner
— For example if woman can’t negotiate condom use because of intimate partner violence
What Does PrEP Mean for Women?
We now have evidence that PrEP works to prevent acquiring HIV if taken as prescribed, but much more work needs to be done before PrEP can be widely used and accepted
• Improving healthcare systems so people can access and afford PrEP • Making HIV testing more widely available – Only people who know they are HIV-negative can use PrEP safely
What Does PrEP Mean for Women?
Women can use PrEP prevent HIV acquisition with or without their partners' cooperation
• Important if intimate partner violence is a factor
– Woman may fear violence if she asks partner to use condoms
• Many questions remain:
– Will women be able to keep PrEP drugs given to them?
• Some women worry drugs given to them might be taken away, given to another family member who "needs them more“
Considering Taking PrEP?
Questions to discuss with your provider:
• How often—and for how long—do I need to take PrEP? What happens if I miss a dose/several doses?
• What are likely side effects and how can I manage them?
• How often will I need to be tested for HIV?
• How much will the drug cost me? – Will it be covered by my insurance? – Will HIV tests also be covered by my insurance?
More questions to discuss with your provider:
• Do any of my current medical conditions make PrEP not a good choice?
• Do any of my other prescription medications, over-thecounter drugs, street drugs, herbs, vitamins, supplements have interactions with the drug?
• What should I do if I become pregnant while on PrEP?
• To learn more, and for links to fact sheet featuring more details, please read the full fact sheet :
– PrEP for Women • For more fact sheets and to connect to our community of women living with HIV, visit:
– www.thewellproject.org
– @thewellprojecthiv.bsky.social – www.facebook.com/thewellproject
– www.instagram.com/thewellprojecthiv/
– www.threads.net/@thewellprojecthiv
– www.youtube.com/thewellprojecthiv
www.thewellproject.org