Hi. Interesting article.
I have been taking NAC each morning + occasionally a 2nd 600 mg dose in the mid afternoon as well. I don't take it evenings bc it's subtly energizing + interferes with sleep. I noted distinct mental improvement from the start. These have maintained or improved over continued use. Alertness, focus, immediate planning capability, ability to envision a near future conceptually for longer term planning, some sense of well being, calmer feeling and ability to complete activities (light, small ones), vision improvement+ restored reading comprehension are what I believe I have gained. This product was an addition to a larger self care plan I've been testing. So I can't accurately assess NAC on it's own standing bc it's part of a multi-supplement approach. But what I do believe is that this compound has been significantly therapeutic for me from the start of taking it. I plan to continue taking it.