NAD+ references: every cited study, logged to source

How to read this list

Every quantitative claim in this digest maps to a numbered entry below. The register is deliberately small and checkable: randomized human trials of oral precursors, the foundational mechanism and aging studies, the IV pharmacokinetics and tolerability work, and the recent reviews that set the ceiling on what the human evidence supports. Where a study reports a brand name in its own title — for example an NR product evaluated in a journal article — that title is reproduced verbatim as a citation; it is a source reference, not an endorsement of any product.