PEP (Post Exposure Prophylaxis)

Worried you were exposed to HIV? PEP has your back.

Sometimes things don’t go as planned. A condom breaks, you miss a dose of PrEP, or you have sex and later find out a partner’s HIV status. That’s where PEP (Post-Exposure Prophylaxis) comes in.

PEP is a set of pills you take for 28 days to stop HIV from taking hold in your body after a possible exposure. It’s not for everyday use: it’s for emergencies.

Timing Matters: Take It Within 72 Hours

PEP works best the sooner you start it; ideally within a few hours of exposure, but you have up to 72 hours (3 days) to start PEP after a possible HIV exposure. After 3 days, PEP doesn’t work well, so don’t wait to get help.

If you think you need PEP, go now! Don’t wait to see “how you feel.” HIV doesn’t usually cause symptoms right away.

When Might You Need PEP?

You might want to start PEP if:

• You had sex without a condom and don’t know your partner’s HIV status.
• The condom broke or slipped during anal or vaginal sex.
• You shared needles or other drug gear.
• You were sexually assaulted.

Even if you’re unsure, it’s okay to ask a nurse or doctor. They’ll help you decide.

What Is PEP, Exactly?

PEP is a set of HIV medications. It usually comes as two or three pills that you take every day for 28 days. These meds stop the virus from spreading in your body. You’ll get tested for HIV when you start PEP and again after you finish. PEP is very safe, and side effects (if you have any) are usually mild, like nausea or feeling tired.

Where Can You Get PEP?

To get PEP, go to a:

• Sexual health clinic
• Emergency room (ER)
• Some urgent care or walk-in clinics
• Some pharmacies

Not every clinic has PEP, so it’s smart to call ahead. In many cities, ERs are the fastest and most reliable way to get it, especially at night or on weekends, but you may have to wait a long time to be seen. Check with your local sexual health organization and they should be able to direct you to places closeby.

How Much Does It Cost?

In many places, PEP is free or low-cost, especially if you’re under 25, a student, or don’t have insurance. If you do have to pay, the full 28-day supply can cost around $1,000+, but there are often ways to reduce that. Ask the clinic staff about help with cost and they’ll walk you through it.

What If I’m Too Embarrassed to Ask?

It’s totally normal to feel nervous, but health workers are trained to help without judgment.

You don’t need to explain every detail. Just say, “I think I was exposed to HIV and want to talk about PEP.” You won’t be the first person to ask — and you probably won’t be the last.

Still Have Questions? Here’s the Quick Scoop

Is PEP like PrEP?

• Not quite. PrEP is taken before sex or exposure to HIV. PEP is taken after something happens.

Can I use PEP often?

• PEP isn’t intended for regular use. If you need it more than once, it might be time to look into PrEP instead so that you can get consistent protection against HIV.

Does PEP always work?

• It’s very effective if you start it on time and take every dose for 28 days.

Can I have sex while taking PEP?

• It’s best to use condoms during PEP, especially in the first few days.

Wanting to get PEP doesn’t mean you’re reckless or bad. It’s a tool to help protect you if something goes wrong.

• Act fast — within 72 hours.
• Get to a clinic or ER right away.
• Take all the meds every day for 28 days.

And when PEP is done, think about your next steps. If HIV is something you’re worried about long-term, PrEP might be a better fit for your everyday life.