Pharmacokinetics of Orally Administered GS-441524 in Dogs

Despite being FDA-approved for COVID-19, the clinical efficacy of remdesivir (Veklury ® ) remains contentious. We previously pointed out pharmacokinetic, pharmacodynamic and toxicology reasons for why its parent nucleoside GS-441524, is better suited for COVID-19 treatment. Here, we assess the oral bioavailability of GS-441524 in beagle dogs and show that plasma concentrations ∼24-fold higher than the EC 50 against SARS-CoV-2 are easily and safely sustained. These data support translation of GS-441524 as an oral agent for COVID-19.