Two flagship 'wellness IV' molecules with completely different jobs — coenzyme energy metabolism vs master antioxidant detoxification.
NAD+ and glutathione are frequently offered side-by-side in IV clinics, but they do fundamentally different work. NAD+ is a coenzyme central to mitochondrial energy production and DNA repair. Glutathione is the body's dominant intracellular antioxidant and Phase-II detoxification substrate.
| NAD+ | Glutathione | |
|---|---|---|
| Class | Coenzyme (dinucleotide) | Tripeptide antioxidant |
| Primary role | Mitochondrial energy, DNA repair, sirtuin activation | Redox balance, Phase-II detoxification |
| Typical dosing route | IV, IM, SC | IV, IM, oral (poor bioavailability), nebulized |
| Research focus | Longevity, cognitive support, addiction recovery | Liver support, oxidative-stress conditions, skin |
| Feels like | Reported energy, mental clarity | Reported skin, immune, hangover recovery |
| Complementary? | Yes — often paired | Yes — often paired |
NAD+ is a coenzyme central to cellular energy production, DNA repair, and sirtuin signaling. Endogenous NAD+ declines with age, which has made it a focal point of longevity and metabolic research.
Acts as an electron carrier in redox reactions and a substrate for sirtuin and PARP enzyme families involved in DNA repair and metabolic regulation.
Glutathione is a tripeptide composed of glutamate, cysteine, and glycine. It is the principal endogenous antioxidant inside cells and a key participant in detoxification and immune-related research.
Donates electrons to neutralize reactive oxygen species and conjugates xenobiotics for phase-II detoxification.
They are not substitutes. NAD+ is the energy-and-repair coenzyme; glutathione is the detox-and-antioxidant tripeptide. Many practitioners cycle them together as a metabolic + redox stack.
The table above compares published characteristics, not outcomes for any individual. Mechanism, half-life, and dosing cadence are properties of the molecule; response, tolerability, and suitability are properties of the person. Trial averages describe populations and say nothing definitive about a single case.
All peptide products referenced are intended solely for research, investigational, or licensed professional use. They are not FDA-approved and are not intended to diagnose, treat, cure, or prevent any disease. Consult a licensed medical practitioner before any personal or clinical use.
Strictly, NAD+ is a coenzyme rather than a peptide, but it is commonly stocked alongside research peptides in longevity-focused inventories.
Both are central to redox biology — NAD+ drives energy and repair pathways while glutathione handles antioxidant defense, so they appear together in longevity research.