PepEvolution
LongevityPreliminary grade

NAD+

A central metabolic cofactor sold as an IV/injectable longevity therapy — broadly benign, but the direct-injection evidence is thin.

Verdict — C · Emerging / Mixed

A genuinely important molecule with a benign safety profile, but the popular injectable/IV longevity use is weakly evidenced relative to oral precursors, and the infusion experience is uncomfortable. A C — used widely in the wild, but the direct-injection evidence isn't there yet.

Overview

NAD+ (nicotinamide adenine dinucleotide) is a redox cofactor essential to cellular energy metabolism and DNA repair, and is not a peptide. It is marketed heavily as an intravenous or subcutaneous longevity and "cellular energy" therapy. The stronger human evidence sits with oral NAD+ precursors (nicotinamide riboside, NMN) rather than with direct NAD+ injection/infusion, which has a much thinner clinical base. Safety is generally favourable — the main complaints are infusion-related flushing, nausea and chest tightness during rapid administration.

PepScore Breakdown — the four axes

Evidence

35% weight
41/100

How strong is the published human science?

Human data depth14/40
Regulatory & registry status8/30
Reproducibility & consistency11/20
Mechanism characterized in humans8/10

Sourcing & COA

30% weightOur moat
61/100

Can a buyer obtain an independently-verified, high-purity version? — our proprietary layer.

Independent 3rd-party testing20/35
Verified purity %18/30
COA transparency & batch traceability12/20
Multi-vendor verified availability11/15

Safety & Risk

25% weight
76/100

What is the real-world harm potential?

Documented AEs / toxicity30/40
Contraindication breadth19/25
Regulatory warnings15/20
Therapeutic index / margin12/15

Practicality

10% weight
63/100

How easy is it to actually run a verified version?

Verified-source availability24/35
Cost / value per cycle14/25
Reconstitution & administration16/25
Storage & stability9/15

Sources & Citations

Every claim cites a primary source. Citations are machine-audited against NCBI — see methodology.

PepScore58/100 · C
Last gradedJune 28, 2026
Next re-grade triggerA controlled trial of injectable/IV NAD+ on a longevity or performance endpoint would clarify the grade.

Educational only — not medical advice. PepScore is an educational research grade, not a prescription or dosing recommendation. Some vendor links are affiliate links — this never affects grades. Consult a licensed healthcare provider before using any compound.