How can an antioxidant, like NAC, protect against a virus, which is not an oxidant?
It makes the mucus, especially in the lungs, less viscous, and therefore more easily expelled. Expelled mucus means expelled viri
Read up on it. I’m not a doctor, so all I can say is with NAC, I’ve had a lot less coughing and post nasal drip, which helps me sleep better. This benefit is something known from the pre-Covid days. My doctor told me about it.