Optimizing On-Demand Tenofovir Disoproxil Fumarate/Emtricitabine Dosing in Women for HIV Prevention.

Engel, Nathan; Dumond, Julie B; Kashuba, Angela D M; Cottrell, Mackenzie L · J Infect Dis · 2026

basic_science · Level V

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Abstract

Using an established pharmacokinetic/pharmacodynamic tissue model of tenofovir disoproxil fumarate/emtricitabine for HIV pre-exposure prophylaxis (PrEP), we predict that adding a fourth day of dosing to the 3-day IPERGAY on-demand PrEP regimen (currently approved for men/transgender women who have sex with men) will be efficacious for on-demand dosing in cisgender women.

Medical subject headings