NAD+
NAD+ is a naturally occurring coenzyme found in every cell of the body. It plays a central role in cellular energy production, redox balance, and enzyme activity involved in DNA repair and cell signaling. Interest in NAD+ has grown because NAD levels can decline with age, but current human evidence is stronger for changes in biomarkers than for proven anti-aging or wellness outcomes.
Overview
NAD+ stands for nicotinamide adenine dinucleotide. It is the oxidized form of a coenzyme pair, NAD+/NADH, that helps transfer electrons during metabolism so cells can produce ATP. NAD+ is also used by enzymes involved in genome maintenance and cellular stress responses.
What it is
NAD+ is a coenzyme, not a peptide. It is derived from niacin-related pathways and is essential for cellular metabolism and energy production
Mechanism (high level)
NAD+ functions as an electron carrier in metabolic reactions and serves as a substrate for NAD-dependent enzymes. In practical terms, it helps support mitochondrial energy production and cellular repair signaling.
Quick facts
- Dosage
- No universally accepted standard dose has been established for direct NAD+ use in wellness or longevity settings. Published IV research has included a 6-hour infusion at 3 µmol/min and, in a recent retrospective pilot, 500 mg IV daily for 4 consecutive days.
- Route
- Intravenous infusion
- Cycle
- No standardized cycle has been established. In published IV research, short multi-day protocols such as 4 consecutive days have been used.
- Storage
- Follow manufacturer or compounding pharmacy instructions exactly Protect from heat and light Store only as labeled by the dispensing source
Research indications
- Cellular energy support
- Mitochondrial function research
- Healthy aging research
- Metabolic health research
- Cognitive aging research
- Fatigue research
- Neurodegeneration research
- DNA repair and cellular resilience research
- These are best framed as research interests, not FDA-approved indications. Current studies support ongoing investigation, but not established anti-aging approval or definitive clinical benefit.
Research protocols (education)
6-hour IV infusion at 3 µmol/min in pilot metabolome study 500 mg IV daily for 4 consecutive days in retrospective tolerability pilot Human evidence remains preliminary and larger controlled studies are still needed
Interactions
Often avoided with
- Unsupervised use of compounded injectable NAD+
- Use from non-verified sterile compounding sources
- Use during pregnancy unless clinician supervised
- Use during breastfeeding unless clinician supervised
- Use with caution in people who previously had infusion intolerance
Often combined with
- Clinician-supervised use
- Protocols using verified sterile compounding sources
- Monitoring during infusion
- Use in research-oriented wellness settings with appropriate oversight
- The strongest current safety warning is around compounded injectable NAD+ quality and contamination risk, not classic drug-drug interactions. FDA said it received adverse event reports following NAD+ injectable use, including severe chills, shaking, vomiting, and fatigue, and warned compounders not to use food-grade NAD+ for sterile products.
Side effects & safety
- Nausea
- Abdominal cramping
- Diarrhea
- Vomiting
- Fatigue
- Chest pressure during infusion
- Increased heart rate during infusion
- Severe chills
- Shaking
- These side effects are drawn from recent IV tolerability research and FDA’s safety communication regarding compounded injectable NAD+ products.
Regulatory notes
- NAD+ is not a peptide
- NAD+ is not an FDA-approved anti-aging treatment
- Compounded sterile NAD+ products must use suitable ingredients
- FDA has received adverse event reports after injectable NAD+ use
- Food-grade NAD+ is not appropriate for sterile compounding
- Those points come directly from NIH background on NAD biology and FDA’s 2024 compounding warning.
FAQ
What is NAD+?
NAD+ is a coenzyme found in all cells that helps drive energy metabolism and supports enzyme systems involved in cellular maintenance.
Is NAD+ a peptide?
No. NAD+ is a coenzyme, not a peptide.
What is NAD+ used for?
NAD+ is being studied for cellular energy, healthy aging, metabolism, and neurologic health, but these are research and wellness areas rather than FDA-approved anti-aging uses.
Is IV NAD+ safe?
Short-term studies suggest it can be tolerated, but infusion-related side effects can occur, and FDA has warned about contamination risks in improperly compounded injectable NAD+ products.
Is there a standard NAD+ dose?
No standard evidence-based dosing guideline has been established for direct NAD+ wellness use. Published studies have used research-specific IV protocols instead.
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Educational content only. This material is not medical advice. Verify legality, sourcing, and dosing with a qualified professional.