Potential for off label drugs in treatment of active covid-19 infection

I heard from a friend that the active ingredient in Pepsid, a chemical named Famotidine, may be effective in treatment of Corona Virus cases. I did a search and found this summation By Dr. Roger Seheult, board certified in Internal Medicine, Pulmonary, and Critical Care. Dr. Seheult is good at putting the technically complex within an easily understood context. In this fascinating discussion he explains why the more effective approach finding Covid-19 treatments may be among so called "off label" drugs (not yet approved by the FDA for that particular use).

He ends by concluding a better understanding of oxidative stress could be critically important, what it is, how the epithelium is impacted, and how we can mitigate oxidative stress.

Here's a helpful article, "What is oxidative stress?"

https://www.medicalnewstoday.com/articles/324863