NO! He did not use Remdesivir. ..REGENERON
Some folks here seem to be pretty invested in falsely claiming that Trump did not take Remdesivir, when his doctors say that he did.
https://www.npr.org/sections/latest-updates-trump-covid-19-results/2020/10/03/919883050/trump-is-taking-remdesivir-heres-how-it-works-to-control-the-coronavirus