Emory Health Sciences Nov 27 2024 For oral medications that prevent new HIV infection to be effective, the patient must take certain actions, including attending doctor's visits every three months and – most importantly – consistency.  These daily oral antiretrovirals, more commonly referred to as PrEP (pre-exposure prophylaxis), such as Truvada®, are extremely effective at HIV prevention, but only if they are taken daily as directed. Truvada's efficacy is greatly compromised when taken