You can get it from the manufactures or from nutritional sites online. I found it in a local grocery store that has a substantial vitamin/natural health department. They had glutathione, too. I couldn't find NAC in an actual vitamin store. The employee I talked to at one store told me there has been a nation-wide run on the stuff, and he said they had it backordered because the manufacturers can't keep up with the demand. I ordered some online, and it was backordered for me there, too. I don't know when I'll see that, but thank God they had it in the grocery store. (Local farmer's market type chain store.)

I ordered it online from a nutritional-vitamin company. There were a lot of them that had it. My purchase was back-ordered, but it wasn't too long before it came. I also found it at a local farm-market type grocery store. They had a whole shelf of it, but I don't think anyone knew it was there because of where they placed it.

I'm in Greece and I just ordered some via eBay a week ago. I already have Lysine. I got HCQ from Alibaba but the seller has disappeared (banned?) I can't get Ivermectin anywhere. I ordered some from Germany but they demanded a prescription. I'm told that the local vets won't supply it.

When I got the wu-flu in Jan 2020 I was already taking D3 (10,000 iu), K2 (200µg), magnesium citrate (300mg) and zinc citrate (30mg). So I'm confident that these daily doses are not harmful in any way. I take them each morning with a slice of hard cheese, since some of them are fat soluble.