Since Drudge is now carrying a link to an article that cites "Long-Term Administration of Nicotinamide Mononucleotide Mitigates Age-Associated Physiological Decline in Mice", there is going to be a lot of public awareness and practical questions involving cost-benefits of various NAD+ precursors.
The following tables would be most helpful. Not knowing any better, I've created publicly editable GoogleDocs Spreadsheets for them:
"precursor", "source" and "cost per mass" (and "date" of this relationship*)
"precursor", "source" and "mass ratio".
"precursor", "study", "human equivalent dose"**, "body weight", "formula"
*The "date" column for dietary supplements is actually a _bit_ redundant as change-tracking in GoogleDocs has this information, at least by implication, but it isn't as convenient as it might be.
** Calculating human equivalent dose is not always simple, which is why there is a column for body weight as input to the formula for the HED. If cites to justification for the formula are necessary, they can be included in a "Note" to that cell.
Any suggestions?