Effect of Early Treatment with Ivermectin Among Patients with Covid-19
nejm.org
nejm.org
I don't know if "up to 7 days after symptom onset" qualifies as early antiviral treatment.
hastily-googled citations:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7323384/
https://www.cdc.gov/flu/professionals/antivirals/summary-cli...
The story should end here.