Sinclar has talked about this NAD plus resverotrol combo for a few years now, i take the latter because i can find it at my local health food store, I cant find a good source of the former unless looking online and there is no good way to know if its good or not, so i havent tried NAD.
the kicker is if you have the cash (NAD is relatively expensive) its not an expensive experiment to try from a Harvard professor