Understanding PEP Post-Exposure Prophylaxis for HIV
Post-Exposure Prophylaxis (PEP) is an emergency, short-term treatment with antiretroviral medications aimed at preventing HIV from establishing an infection in the body after potential exposure to the HIV virus. It must be started within 72 hours of exposure for maximum effectiveness and is used for emergency situations, not as a regular prevention method like PrEP.
How PEP Works
PEP works by inhibiting HIV from replicating and spreading throughout the body. The medications used in PEP are the same types of antiretrovirals prescribed to individuals living with HIV, but they are taken temporarily to prevent infection in someone who has been exposed to the virus.
PEP consists of a combination of anti-retroviral drugs, typically taken daily for at least 28 days.
Who Should Consider PEP?
PEP is for anyone who believes they may have been exposed to HIV in the last 72 hours. It is used in situations where HIV exposure was unexpected or accidental, including:
Unprotected Sex: Condomless sex or condom failure with a partner whose HIV status is unknown or positive.
Sexual Assault: Victims of sexual assault are advised to consider PEP to prevent HIV transmission.
Needle Stick Injury: Healthcare workers or individuals exposed to blood or bodily fluids from someone with, or at risk for, HIV.
Timing and Urgency of PEP
PEP is a medical emergency that should be started as soon as possible after potential exposure to HIV:
Within 72 Hours: PEP must be started within 72 hours (3 days) after exposure for maximum efficacy. The sooner treatment begins, the better the chances of preventing HIV infection.
Do Not Delay: Every hour counts, and delaying treatment increases the risk of HIV taking hold in the body.
Effectiveness of PEP
PEP is highly effective at preventing HIV infection if taken correctly and started promptly:
Correct Usage: When taken within 72 hours and completed over the 28-day course, PEP significantly reduces the risk of HIV infection.
Adherence: Strict adherence to the medication regimen is crucial for PEP to work. Missing doses can decrease its effectiveness.
Follow-Up Testing: A person will need follow-up HIV tests after completing PEP to ensure they have not contracted the virus.
Side Effects of PEP
Most people tolerate PEP well, but there can be some side effects. These are usually mild and manageable, and they typically resolve after treatment ends. Common side effects include:
Nausea and Vomiting: Mild nausea or vomiting may occur, particularly in the first few days of treatment.
Fatigue: Some people feel more tired than usual during the treatment.
Diarrhea: Digestive issues like diarrhea are possible but generally temporary.
Neurological symptoms: Mild headaches or dizziness may occur but tend to resolve over time. Vivid dreams have been reported as a side effect as well
If any side effects become severe or persistent, consult a healthcare provider for advice.
Follow-Up and Monitoring After PEP
After completing the 28-day PEP regimen, follow-up care is essential to confirm that HIV infection has not occurred:
HIV Testing: An HIV test is typically done immediately after completing PEP and again some time later to ensure that HIV infection has been successfully prevented.
STI Screening: Depending on the nature of the exposure, we may recommend additional tests for other sexually transmitted infections (STIs).
Ongoing Prevention: Individuals who are at ongoing risk of HIV exposure should continue long-term prevention options, such as Pre-Exposure Prophylaxis (PrEP).
Prevention and Risk Reduction
While PEP is a powerful emergency prevention tool, it is not a substitute for regular HIV prevention methods:
Safe Sex Practices and Condom Use: Consistent and correct use of condoms during sex is a highly effective way to prevent HIV and other STIs. Proper partner selection is key too.
PrEP for Ongoing Risk: For those who are at ongoing risk of HIV, PrEP offers continuous protection and may be a better option than repeated use of PEP.
Empower Yourself
Understanding PEP and acting quickly after potential HIV exposure is critical to preventing infection. If you believe you may have been exposed to HIV, it’s important to seek medical attention immediately. Our clinic provides fast access to PEP and comprehensive follow-up care to ensure the best possible outcomes.
For more information or to schedule a consultation, you can call in at 6735 8180, Whatsapp us at 8223 0609, email us at info@freia.sg, or book a consultation online at https://freia.sg/appointments/