PAE has posted a lot on NAC. I think he speaks highly of the timed release version.
Yes, he mentions it a lot..that is why I thought of it. Seems like that will be a key for the oxidative stress
As Medcram pointed out, underlying conditions present someone who already has oxidative stress..and then COVID knocks out what was helping fight it (dont remember his terms..he did a biology lecture) so they have a harder time