Post Exposure Prophylaxis (PEP)
Worried about recent HIV exposure? Start PEP within 72 hours to reduce infection risk.
Time-sensitive: PEP must be started within 72 hours of exposure. The sooner you start, the better. Contact us immediately.
What is PEP?
HIV PEP (Post-Exposure Prophylaxis) is a 28-day course of antiretroviral medication taken after a suspected high-risk exposure to HIV. For best protection, start within 24 hours — but PEP can be effective up to 72 hours post-exposure. PEP works by preventing HIV from establishing infection in your body.
Timing is Crucial
HIV takes time to establish infection. PEP interrupts this process — if started within the window period — blocking the virus before it multiplies in your body. The sooner you start, the more effective PEP is. Ideally within 2 hours, but no later than 72 hours after exposure.
When You Need PEP
Consider PEP if within the last 72 hours you have had: unprotected sex with someone who is HIV-positive or of unknown status, a condom break during sex, shared needles, or experienced sexual assault. Come to PULSE Clinic immediately for assessment.
What to Expect at PULSE Clinic
Our doctor will assess your risk, perform a baseline HIV test, and if PEP is appropriate, prescribe the medication immediately. You will take the medication daily for 28 days and return for follow-up HIV testing at 4 weeks and 3 months post-exposure.
Medications & Side Effects
PEP typically involves a combination of 2-3 antiretroviral drugs. Common side effects include nausea, fatigue, and headaches, which usually subside within the first week. Our team will monitor you throughout the 28-day course.
Related Services in Sexual Health
Ready to take the next step?
Book your confidential appointment at PULSE Clinic Hong Kong today.