NMN (Nicotinamide Mononucleotide)
Direct NAD+ precursor. Oral. The most-purchased longevity supplement in the peptide-adjacent community. Cheaper and easier than IV NAD+.
What it actually is
Not a peptide. NMN is one biosynthetic step away from NAD+ — your cells convert it directly. Sold as an oral capsule or sublingual powder. The whole appeal is that it's a substrate route to raising NAD+ without the IV.
Why peptide users come across it
Lower-friction alternative to IV NAD+. David Sinclair takes ~1 g/day. Often stacked with resveratrol or pterostilbene (sirtuin activators). Common entry point into the longevity-supplement scene.
Mechanism
Documented dose range
Side effects
Contraindications
The Pepdex take
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