PrEP (Pre-Exposure Prophylaxis) is a medication that helps prevent HIV infection. Let me explain how it works in simple terms:1. Daily Protection: PrEP is taken as a daily pill that contains HIV medicines.2. Prevention Mechanism: When HIV enters the body, PrEP stops the virus from establishing a permanent infection by blocking an enzyme that HIV needs to multiply.3. Effectiveness: When taken consistently, PrEP reduces the risk of getting HIV from sex by about 99%, and by at least 74% among people who inject drugs.4. Getting Started: You need to:- Get tested for HIV- Receive a prescription from a healthcare provider- Take the medication daily- Have regular follow-up visits5. Important Notes:- It takes about 7 days to reach maximum protection for anal sex- It takes about 21 days for maximum protection for vaginal sex- Regular HIV testing is required while on PrEP- PrEP doesn't protect against other STDsI'm an AI health assistant, not a medical professional. This information is for general educational purposes only. Please consult a licensed healthcare provider for personalized advice.