It appears this might not be an outright ban yet. But they have convinced Amazon to stop selling it an major manufacturers to stop producing it. It appears they can't legally ban it yet for reasons I'm still piecing together. (Perhaps because the stuff is harmless?)

It looks like the J&J vaccine I got is down to 65% effective, so about the same as the flu vaccine. So it's good to know that NAC might provide some additional protection.

It's been known for years that NAC protects against the flu.

Edited for massive typos. I shouldn't try to think, write, speak, or chew gum until I've been up at least an hour.