Tier B NADH (Reduced Nicotinamide Adenine Dinucleotide)
Also known as: Reduced NAD · ENADA (stabilized NADH) · Coenzyme 1
1 PMID anchor · MITO · CNS · IMMUNE · Last reviewed 2026-06-08
Mechanism of action
- Mitochondrial Complex I electron donor
- Tetrahydrobiopterin recycling
- Dopamine biosynthesis support
- Cellular ATP production
Molecular + tissue targets
- Mitochondrial electron transport chain
- Dopamine biosynthesis pathway
- Cellular bioenergetics
Dosage range
5-20 mg/day (Forsyth 1999 PMID 10071523 CFS RCT 10 mg/day · Birkmayer 2002 jet-lag 5 mg)
Safety notes
Generally well tolerated; long-term human safety beyond 6 months limited; NADH formulation stability requires enteric coating
Cross-market regulatory status
🇺🇸 FDA
DSHEA dietary supplement (since 1996)
🇪🇺 EFSA
Novel Food classification (case-by-case)
🇧🇷 ANVISA
RDC 243/2018 dietary supplement framework
Evidence anchors (PubMed) · 1
-
Forsyth LM et al. (1999) Ann Allergy Asthma Immunol
Therapeutic effects of oral NADH on the symptoms of patients with chronic fatigue syndrome
Canonical ENADA stabilized NADH 10 mg/d crossover double-blind placebo-controlled RCT · n=26 CFS patients · 8/26 (31%) responded favorably to NADH vs 2/26 (8%) placebo · verified 2026-06-07 · NOT PMID 10367612 (different paper Ambulatory blood pressure responses Psychosom Med 1999)
Common use cases
- chronic fatigue syndrome (research context)
- jet-lag cognition
- cellular energy support