This might turn out to be useful, whichever virus. Perhaps this will turn out to be a widely applicable antiviral in-vivo.
http://www.ipharminc.com/press-release/2020/6/17/innovation-pharmaceuticals-brilacidin-inhibits-sars-cov-2-covid-19-by-97-percent-in-a-human-lung-cell-line
Note
Just by looking at the structure: could be toxic for animals and humans...