Skip to main content
Compound
Codex
Ledger
Hubs
Tools
Guides
Bloodwork
Forum
Browse
Ledger
All hubs
GLP-1 & weight loss
SARMs
Steroids & PEDs
GH secretagogues
Healing peptides
Melanocortins
Nootropic peptides
SERMs
Aromatase inhibitors
Cosmetic peptides
Mitochondrial peptides
Women
Compare
Watchlist
Topics
Reference
Guides
The toolkit
How we grade · the Codex Scale
Changelog
Testing labs
Citations
Calculator & converter
Bloodwork analysis
Marker reference
Resources
Community
Forum
Site
Home
About
Editorial process
Standards
Contact
Search
RSS
Independent reference & toolkit
100
compounds graded · Last reviewed June 2026
topics
/ nad-precursor
Tagged nad-precursor.
6/10 · Preliminary
NMN
NMN is a small-molecule NAD+ precursor that reliably raises blood NAD+ levels in humans, but its marketed anti-aging and metabolic benefits remain preliminary and surrogate-based.