TABLE 1. Overview of PrEP, PEP, and TasP

	Use	Advantages	Disadvantages
Pre-exposure prophylaxis (PrEP)	Before HIV exposure	Highly effective at preventing HIV infection when drug is taken as prescribed	Potentially high cost, depending on insurance coverage Does not protect from other STIs (eg, chlamydia, gonorrhea, syphilis) Only 1 medication is currently available
Post-exposure prophylaxis (PEP)	Within 72 hours of a potential HIV exposure	Reduces the likelihood that HIV will spread throughout the body	Potentially high cost, depending on insurance coverage Multiple medications required Must start within 72 hours of exposure Must take daily for 28 days
Treatment as prevention (TasP)	After HIV diagnosis	Highly effective at controlling an individual’s viral load and preventing HIV transmission to others	Potentially high cost, depending on insurance coverage Multiple medications required Lifetime use