Combination Dosing Regimens for the Prevention of HIV
This technology includes combinations of currently approved antiretrovirals (ARVs) which could allow for simpler dosing regimens that improve adherence to HIV prevention strategies. Event-Driven PrEP (ED-PrEP) with 2 oral doses of tenofovir disoproxil fumarate (TDF)/emtricitabine (FTC) taken 2-24 hours before sex, a 3rd dose 24 hours after sex, and a 4th dose 48 hours after sex (2+1+1) is considered as a PrEP option by the World Health Organization for men who have sex with men (MSM). Recommended post-exposure prophylaxis (PEP) regimens require 28 days of daily oral dosing.