Bests & Worsts Reviews from Amazon

Just so absolutely everyone is aware, this product (after 2018) no longer contains Niagen -- it's an alternative to Nicotinamide Riboside. Whether the substitute works for you as an effective (or more effective) NAD+ stimulant is, of course, going to be up to you. I suspect there are some who are not reading the bottle carefully or who do not keep up with industry news. So far there hasn't been much of a change for me, but I've also taken other supplements in areas that NAD(3) also works in. This may be a good value even just from an economical perspective there. Will update in the future if any effects are noted over the long term.