NAC can still be bought, iHerb.com, Walmart, Walgreens all have it.
Thanks, I’ll be looking for it again! I had not seen it offered at stores last year when I first heard of it, but maybe it was a supply chain issue that has been sorted out.
Thank you again, FRiend, for your tip. I looked locally and couldn’t find it. Then found it through Walmart.com. It arrived today and iherb fulfilled the order!